00281nam a2200121Ia 450000500170000000800410001704100080005808200150006610000140008124500340009526000210012930000090015020260720174718.0260720s1967    xx            000 0 und d  aeng  a500.2 IPSI  aIPS Group  aIntroductory physical science  aNew Jerseyc1967  a227p