00683nam0-22002411i-450-990002648580403321000264858FED01000264858(Aleph)000264858FED0100026485820000920d1971----km-y0itay50------baENGProgrammed Learning Aid for principles of marketingRyan W.T.IllinoisIrwin1971Ryan,William T.108359ITUNINARICAUNIMARCBK9900026485804033214-0-301-TI3554ECAECAProgrammed Learning Aid for principles of marketing430865UNINAING01