Ciencia y Tecnología
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Pneumatic conveying
Ernest George Phillips
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Popular lessons in astronomy
Francis J. Grund
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Mountain life in Algeria
Edgar Barclay
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An introduction to the study of fishes
Albert C. L. G. Günther
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Waves and ripples in water, air, and æther
J. A. Sir Fleming
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The alligator and its allies
A. M. Reese
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The manufacture of mineral and lake pigments
Josef Bersch
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Studies of trees in winter : A description of the deciduous trees of northeastern America
Annie Oakes Huntington
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Wild flowers of the north-eastern states
Ellen Miller
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Research methods in ecology
Frederic E. Clements
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Aeroplane construction
Sydney Camm
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Tracks in the snow
Baron Godfrey Rathbone Benson Charnwood
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Stellar atmospheres
Cecilia Payne-Gaposchkin
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Life histories of North American woodpeckers
Arthur Cleveland Bent
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Soils
Eugene W. Hilgard
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Common poisonous plants of New England
Heber W. Jr. Youngken
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The reaction between manganese dioxide and potassium permanganate
Arthur John Hopkins
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The jungle folk of Africa
Robert H. Milligan
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The mighty deep : and what we know of it
Agnes Giberne
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Lake country sketches
H. D. Rawnsley
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The birds of Jamaica
Philip Henry Gosse
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Trapping wild animals in Malay jungles
Charles Mayer
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Catching of the whale and seal
Anonymous
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On the constitution of atoms and molecules
Niels Bohr
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At home in the Smokies
Wilma Dykeman
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The Percheron horse
Charles Du Hays
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Comparative geography
Carl Ritter
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The useful trees of northern Nigeria
Hugh Vandervaes Lely
