000 00380nam a2200145Ia 4500
008 170929s9999 xx 000 0 und d
040 _aMAIN
041 _aEnglish
082 _a659.3/ROG
_b& SHO
100 _aROGERS E.M.,SHOEMAKER, R. FLOYD.
245 _aCOMMUNICATION OF INNOVATION - 2nd. EDN.
260 _bTHE FREE PRESS
_c1971
650 _aMASS COMMUNICATION
942 _cBK
999 _c7080
_d7080