By Ketchum, Milo S.
New York : McGraw-Hill, 1912 .
459 p. : 23 cm.

By Heise, F.
Paris : Librairie Polytechnique Ch. Béranger, 1912 .
763 p. : 25 cm.

By Burnham M., Howard.
London : Charles Griffin, 1912

By Scala, Augusto C..
[Buenos Aires?] : Coni, 1912

Minneapolis : School of Mines, 1912 .
n. : 22,5 cm.

Buenos Aires : Asociación Argentina de Ciencias Naturales, 1912 .
t. : , t.5 no.20(1922) Bibliografía Botánica Argentina. 26,5 cm.

By Meunier, Stanislas.
Paris : J.B.Bailliere, 1912 .
540 p. : 23 cm.

By Grossi, Mario.
Milano : Ulrico Hoepli, 1912 .
64 p. : 14,5 cm.

By Dussert, M. D..
Paris : H.Dunod et E.Pinat, 1912 .
191 p. : 22,5 cm.

By Searle, Alfred B..
Cambridge : University Press, 1912 .
176 p. : 16 cm.

By Hoernes, Maurizio.
Milano : Societa Editrice Libraria, 1912 .
614 p. : 27 cm.

By Launay, L. de.
Madrid : Gutenberg, 1912 .
372 p. ; 18 cm.

By Burnham, Howard.
London : Ch.Griffin, 1912 .
160 p. : 23 cm.

By Ketchum, Milo S..
New York : McGraw-Hill, 1912 .
459 p. : 23 cm.

By Principi, Paolo.
Milano : F.Vallardi, 1912 .
212 p. : 18 cm.

By Maurantonio, Leonardo.
Milano : Ulrico Hoepli, 1912 .
256 p. : 15 cm.

By Brunswig, H..
New York : J.Wiley, 1912 .
350 p. : 21 cm.

By Doelter, C..
Leipzig : Verlag, 1912 .
9 v. : 25 cm.

By Burali-Forti, Dott C..
Torino : G.Gallizio, 1912 .
267 p. : 23 cm.

By Suess, Ed..
Paris : Libr.Armand Colin, 1912 .
835 p. : 24 cm.