00489nam a2200145Ia 450000500170000000800410001704100080005808200120006610000420007824500530012026000430017330000090021699900190022595200990024420260720174711.0260720s1947    xx            000 0 und d  aeng  a030 WBE  aRobert O Zeleny William Nault9270466  aWorld book encyclopedia 50th anniversary edition  aChicago,LondonbField Enterprisec1947  a980p  c244657d244657  001040708BEDaALbALd2026-07-20l0o030 WBEpBED03049r2026-07-20 17:47:11w2026-07-20yBK