00443nam a2200157Ia 450000500170000000800460001703700130006304000210007604100130009708400240011010000200013424500520015426000500020630000150025665000140027120250508152125.0008  250505s9999    xx            000 0 hin d  aTextBook  aFEDL bengcFEDL  ahin2hin  a301.1532, ZELqFEDL  aZelko Harold P. 0aSuccessful conference and discussion techniques  aNew York, USAbMcGraw Hill Book Companyc1957  axiii,264p.  aSociology