00277nam a2200109 a 450000500170000002000150001708200220003210000190005424500380007326000370011130000190014820251203092000.0  a817446039X  a658.5421,bD, fon  aFontana, David  aManaging time, David Fontana, eng  aNew Delhi, Excel Books, Inc1993  aix,117p.c20cm