000			00315nam a2200145Ia 4500
001			11542
008			170722s9999 xx 000 0 und d
100			_aRogers Everett M.
245			_aDiffusion of innovations /
250			_a3rd ed.
260			_c1968
653			_aResearch
653			_aScience
942			_cGEN
999			_c3598 _d3598