Rogers, Everett M.
Communication of Innovations : A croos-cultural approach Everett M. Rogers with F. Floyd Shoemaker - 2nd ed. - New York MacMillan 1971 - 476 p. 24 cm
Sociologia
Communication of Innovations : A croos-cultural approach Everett M. Rogers with F. Floyd Shoemaker - 2nd ed. - New York MacMillan 1971 - 476 p. 24 cm
Sociologia