00423nam a2200157Ia 450000500170000000800460001703700290006304000210009204100130011308400090012610000210013524500250015626000600018130000090024154600150025020250508160214.0008  250505s9999    xx            000 0 eng d  aBooks to be hide in OPAC  aFEDL bengcFEDL  aeng2eng  qFEDL  aBawden William T 0aVocational education  aWashington, USAbU.S. Government Printing Office c1919  a30p.  aWeeded out