00277nam a2200109 a 450000500170000008200190001710000160003624500450005225000180009726000320011530000200014720251203091855.0  a658.8,bD, sin  aSinha, J.C.  aPrinciples of Marketing and Salesmanship  a16th rev. ed.  aDelhibR. Chand & Co.c1990  axii, 404p, 22cm