Rogers, Everett M. Diffusion of innovations / Everett M. Rogers - xix, 453 p. : il. ; 23 cm. Rev. ed. of: Communication of innovations. 2nd.ed. 1971. ISBN: 0029266505 Subjects--Topical Terms: INNOVACIONES--DIFUSION--ESTUDIO Y ENSEÑANZA Dewey Class. No.: 303.484 / R7 1983