Autor
Crusafont Pairó, Miguel
1
Dabdoub, Peter
1
Darnell, Pedro,
1
Foresti, Carlos,
1
González de Guzmán, Antonio
1
Gurev, Grigorii Abramovich
1
Haag, Herbert, 1915-
1
Haas, Adolf, 1914-,
1
Haeckel, Ernest Heinrich Philipp August, 1834-1919
1
Hürzeler, Johannes,
1
International Alliance for Learning
1
Keck, F
1
L. Robert, 1935-
1
Lecomte du Nouÿ, Pierre, 1883-
1
Lecomte du Noüy, Pierre, 1883-1947
1
Litrán, Cristóbal,
1
Rabut, Oliver A
1
Ros, Alejandro,
1
Watch Tower Bible and Tract Society
1
Windle, Bertram Coghill Alan, 1858-1929
1