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Theory of

  1. Fundamental ideas and problems of the theory of relativity
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    Albert Einstein
    Fundamental ideas and problems of the theory of relativity
  2. Über die Entstehung der Arten im Thier- und Pflanzen-Reich durch natürliche Züchtung
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    Charles Darwin
    Über die Entstehung der Arten im Thier- und Pflanzen-Reich durch natürliche Züchtung
  3. Darwinism stated by Darwin himself
Characteristic passages from the writings of Charles Darwin
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    Charles Darwin
    Darwinism stated by Darwin himself
Characteristic passages from the writings of Charles Darwin
  4. A discourse on the theory of gunnery
Delivered at the anniversary meeting of the Royal Society, November 30, 1778
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    Sir John Pringle
    A discourse on the theory of gunnery
Delivered at the anniversary meeting of the Royal Society, November 30, 1778
  5. The case against evolution
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    George Barry O Toole
    The case against evolution
  6. Einstein and the universe: A popular exposition of the famous theory
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    Charles Nordmann
    Einstein and the universe: A popular exposition of the famous theory

  7. Kant prolegomenái minden leendő metafizikához

    Immanuel Kant

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    Immanuel Kant
    Kant prolegomenái minden leendő metafizikához
  8. El capital: Resumido y acompañado de un estudio sobre el Socialismo científico
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    Gabriel Pierre Deville
    El capital: Resumido y acompañado de un estudio sobre el Socialismo científico
  9. The Theory of Moral Sentiments
Or, an Essay Towards an Analysis of the Principles by Which Men Naturally Judge Concerning the Conduct and Character, First of Their Neighbours, and Afterwards of Themselves. to Which Is Added, a Dissertation on the Origin of Languages.
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    Adam Smith
    The Theory of Moral Sentiments
Or, an Essay Towards an Analysis of the Principles by Which Men Naturally Judge Concerning the Conduct and Character, First of Their Neighbours, and Afterwards of Themselves. to Which Is Added, a Dissertation on the Origin of Languages.

  10. Illustrations of the Huttonian Theory of the Earth

    John Playfair

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    John Playfair
    Illustrations of the Huttonian Theory of the Earth
  11. The A B C of Relativity
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    Bertrand Russell
    The A B C of Relativity
  12. The Principle of Relativity
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    Albert Einstein
    The Principle of Relativity
  13. The Neptunian, or Water Theory of Creation
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    J. M. Woodman
    The Neptunian, or Water Theory of Creation
  14. The Interpretation of Dreams
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    Sigmund Freud
    The Interpretation of Dreams
  15. The Theory of Psychoanalysis
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    C. G. Jung
    The Theory of Psychoanalysis
  16. Psychology of the Unconscious
A Study of the Transformations and Symbolisms of the Libido. A Contribution to the History of the Evolution of Thought
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    C. G. Jung
    Psychology of the Unconscious
A Study of the Transformations and Symbolisms of the Libido. A Contribution to the History of the Evolution of Thought
  17. Charles Darwin and the Theory of Natural Selection
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    Sir Edward Bagnall Poulton
    Charles Darwin and the Theory of Natural Selection
  18. A Tract on Monetary Reform
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    John Maynard Keynes
    A Tract on Monetary Reform
  19. The Evolution Theory, Vol. 2 of 2
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    August Weismann
    The Evolution Theory, Vol. 2 of 2
  20. Darwinism. The Noachian Flood
A lecture delivered before the Torquay Natural History Society, Jan. 31st, 1870
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    Thomas Roscoe Rede Stebbing
    Darwinism. The Noachian Flood
A lecture delivered before the Torquay Natural History Society, Jan. 31st, 1870
  21. The Evolution Theory, Vol. 1 of 2
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    August Weismann
    The Evolution Theory, Vol. 1 of 2
  22. A Theory of the Mechanism of Survival: The Fourth Dimension and Its Applications
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    W. Whately Smith
    A Theory of the Mechanism of Survival: The Fourth Dimension and Its Applications
  23. Translations from Lucretius
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    Titus Lucretius Carus
    Translations from Lucretius
  24. Schools of Hellas
An Essay on the Practice and Theory of Ancient Greek Education from 600 to 300 B. C.
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    Kenneth J. Freeman
    Schools of Hellas
An Essay on the Practice and Theory of Ancient Greek Education from 600 to 300 B. C.

  25. The Philosophical Theory of the State

    Bernard Bosanquet

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    Bernard Bosanquet
    The Philosophical Theory of the State
  26. Essay on the Theory of the Earth
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    baron Georges Cuvier
    Essay on the Theory of the Earth
  27. Climate and Time in Their Geological Relations
A Theory of Secular Changes of the Earth's Climate
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    James Croll
    Climate and Time in Their Geological Relations
A Theory of Secular Changes of the Earth's Climate
  28. El crimen y el castigo
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    Fyodor Dostoyevsky
    El crimen y el castigo
  29. Psychologische Typen
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    C. G. Jung
    Psychologische Typen
  30. Diversions of a Naturalist
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    Sir E. Ray Lankester
    Diversions of a Naturalist
  31. Leibniz: Zu seinem zweihunderjährigen Todestag 14. November 1916
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    Wilhelm Max Wundt
    Leibniz: Zu seinem zweihunderjährigen Todestag 14. November 1916
  32. Outlines of a Critical Theory of Ethics
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    John Dewey
    Outlines of a Critical Theory of Ethics
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