00231nam a2200109Ia 4500008004100000041000800041082002100049100001800070245001600088260000900104300000800113211209s1968    xx            000 0 und d  aeng  a523.8446 N68 SHK  aSHKLOVSKY I S  aSUPERNOVAE   c1968  a444