00259nam a2200109Ia 4500008004100000041000800041082002300049100001300072245003100085260002500116300000800141211209s1980    xx            000 0 und d  aeng  a510.33 N80 VAS/GUT  aVASILYER  aSTRAIGHT LINES AND CURVES   bMIR PUBLISHERSc1980  a194