00481nam a2200145Ia 4500008004100000082002100041100002300062245006000085250001200145260003700157300001400194600004800208600003500256650004400291140224s9999    xx            000 0 und d  a301.153.001.5 L1  aRogers, Everett M.  aCommunication of innovations; a cross-cultural approach  a2nd ed.  aNew YorkbThe Free Presscc 1971  axix,476p.  a Everett M. Rogers (and) F. Floyd Shoemaker  aShoemaker, F.Floyd., jt. auth.  aDiffusion of innovations,Communication.