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Zoology
Zoology
Scientific study of animals
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Kuyavian-Pomeranian Digital Library
East Asian Collections in Slovenia
National Heritage Institute, Bucharest
Finnish Heritage Agency
Finnish Heritage Agency
Finnish Heritage Agency
Finnish Heritage Agency
Public Library Pencho Slaveykov, Varna
I. Simionescu; Ion Th. Simionescu, (geolog, paleontolog) (1873-1944)
Octavian Goga Cluj County Library
T. A. B.; T.A. Bădărău ((1872-1958))
Mihai Eminescu University Library
de Ion Simionescu; Ion Th. Simionescu, (geolog, paleontolog) (1873-1944)
Octavian Goga Cluj County Library
Nicolai Leon; Nicolae Leon, (biolog, profesor) (1862-1931) [autor]
Octavian Goga Cluj County Library
I. Simionescu; Ion Th. Simionescu, (geolog, paleontolog) (1873-1944)
Octavian Goga Cluj County Library
Florentina-Carmen Oleniuc; Luminița Bejenaru
National Heritage Institute, Bucharest
Sorin Geacu
National Heritage Institute, Bucharest
Octavian Goga Cluj County Library
Valentin Dergaciov
National Heritage Institute, Bucharest