Datason, R.P.. SBPO examination guide / by R.P. Datason, B.L. Sadana & S.L. Gulati. - 33rd ed / - New Delhi : New Light Publishers , 1996 - 40p : ISBN: 81-85018-55-3 Subjects--Topical Terms: General knowledge Dewey Class. No.: 1K44 / P0