00402nam a2200133Ia 4500082002100000100004700021245006100068250000800129260003100137300001400168500004600182500000500228700003500233  a303.484bR725.CI  aRogers, Everett M. and Shoemaker, F. Floyd  aCommunication of innovation; a cross cultural approachb  a2nd  aNew YorkbFree Pressc1971  axx, 476p.  a"Revised ed. of diffusion of innovations"  a  aShoemaker, F. Floyd ; jt.auth.