37 resultados para Pennsylvania Institution for the Instruction of the Blind.

On the fossil foot-marks in the red sandstone of Pottsville, Pennsylvania / by Isaac Lea.

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The essentials of biology, by James Johnstone.

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The story of evolution; facts and theories on the development of life, by Benjamin C. Gruenberg.

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The Argasidae of North America, Central America and Cuba,

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Flora of Illinois, containing keys for the identification of the flowering plants and ferns, by George Neville Jones ...

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The problems of evolution, by Arthur Ward Lindsey.

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History of the sciences in Greco-Roman antiquity / by Arnold Reymond ; translated by Ruth Gheury de Bray.

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The recent development of physical science, by William Cecil Dampier Whetham.

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The identification of trees & shrubs; how to recognize, without previous knowledge of botany, wild or garden trees and shrubs native to the north temperate zone, with 2,500 diagrams made by the author.

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Problems of cytology and evolution in the Pteridophyta.

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The physiology of photosynthesis, by Sir Jagadis Chunder Bose; with sixty illustrations.

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Genetics today : proceedings of the XI International Congress of Genetics, The Hague, The Netherlands, September 1963 / edited by S. J. Geerts.

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Nomenclature of plants; a text for the application by the case method of the International code of botanical nomenclature.

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A manual of the penicillia, by Kenneth B. Raper and Charles Thom; with the technical assistance and illus. by Dorothy I. Fennel.

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Phytoplankton of the inland lakes of Wisconsin ... by Gilbert Morgan Smith.

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