Biology

SEMON, RICHARD.

Leipzig, Engelmann, 1912.

SPENGLER, LORENTZ.

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SPENGLER, LORENTZ.

Copenhagen, 1781.

DARWIN, C. R. (+) DARWIN, G. H.

(London and New York, Macmillan and Co., 1873).

PONTOPPIDAN, ERICH (ERIK).

London, A. Linde, 1755.

VAILLANT, SEBASTIEN.

Leiden & Amsterdam, Verbeek & Lakeman, 1727.

LIDDELL, E.G.T. a. CHARLES SHERRINGTON.

Oxford, London, 1929.

GOSSE, PHILIP, HENRY.

London, Van Voorst, 1860.

DARBISHIRE, A.D.

London, N.Y. etc., 1911.

VRIES, HUGO DE.

Leipzig, Wilh. Hirsemann, 1877.

WATSON, JAMES, D.

London, Weidenfeld and Nicolson, (1968).

HARTING, P.

Leipzig, W. Engelmann, 1851.

WÖHLER, FRIEDRICH & JUSTUS LIEBIG - CLASSIFYING ORGANIC COMPOUNDS.

Leipzig, Johann Ambrosius Barth, 1832.

VRIES, HUGO de. - THE THEORY OF MUTATIONS UNFOLDED.

Leipzig, Veit & Comp., 1901-03.

VRIES, HUGO DE.

Chicago, London, Open Court Publ. Company, Kegan Paul, Trench, Trübner & Co., 1905.

REGIUS, HENRICUS. - REVOLT AGAINST CARTESIAN METAPHYSICS

Amsterdam, L. & D. Elzevirios, 1661.

SPENCER, HERBERT & HUXLEY, T. H.

New York, D. Appleton and Company, 1874.

VRIES, HUGO de. - THE THEORY OF MUTATIONS UNFOLDED.

Leipzig, Veit & Comp., 1901-03.