00370nam a2200145Ia 450000500170000000800410001704100080005808200120006610000340007824500420011226000250015430000090017965000170018870000190020520250729165602.0250729s1968    xx            000 0 und d  aeng  a030 WBC  aRobert O Zeleny William Nault  aThe World Book Encyclopedia Vol-13(M)  aChicago,Londonc1968  a821p  aEncyclopedia  aRao Digumurthi