00301nam a2200109Ia 4500008004100000041000800041082002300049100002200072245005300094260003600147300000800183211209s1989    xx            000 0 und d  aeng  a621.381045 N89 SEI  aSEIPPEL, ROBERT G  aOPTOELECTRONICS FOR TECHNICIANS AND ENGINEERING   aNEW JERSEYbPRENTICE HALLc1989  a382