00295nam a2200097Ia 4500008004100000082001700041245006500058260003200123650002600155700001600181220204s9999    xx            000 0 und d  a53:62bPHY.2 0aSlide projector: A module on geometrical and physical optics  aNew YorkbMcgraw Hillc1975  aPhysics of technology  aDilavore, P