00298nam a2200097Ia 4500008004100000040001100041100002400052245004800076260006500124300001100189251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aProf. M. S. Thacker 0aJournal of Scientific & Industrial Research  c1960bCouncil of Scientific & Industrial ResearchaNew Delhi  bV. 19A