Collective dynamics /
Lang, Kurt, 1924-
Collective dynamics / [Kurt Lang, Gladys Engel Lang. - New York, Crowell [1961] - 563 p. ; 24 cm.
GRUPOS SOCIALES INTERACCIÓN SOCIAL
Collective dynamics / [Kurt Lang, Gladys Engel Lang. - New York, Crowell [1961] - 563 p. ; 24 cm.
GRUPOS SOCIALES INTERACCIÓN SOCIAL