por Rogers, Carl R. (Carl Ransom), 1902-1987 [autor].
por Rogers, Carl R. (Carl Ransom), 1902-1987 [autor] | Vetrano, Silvia [traductor] | Rogers, Carl R. (Carl Ransom), 1902-1987. Freedom to learn.
por Rogers, Carl R. (Carl Ransom), 1902-1987 [autor] | Freiberg, H. Jerome [autor] | Soler Chic, Joan [traductor].
por Rogers, Carl R. (Carl Ransom), 1902-1987 [autor] | Vetrano, Silvia [traductor] | Rogers, Carl R. (Carl Ransom), 1902-1987. Freedom to learn for the 80's.