00294nam a22001097a 4500003000400000008004100004082001700045100002700062245005900089260002800148300000800176OSt230922b        |||||||| |||| 00| 0 eng d  a301.35bD18F  aDas, R.B. & Sing, D.P.  aFormulation and Execution of block plans; a case study  aOxford & IBH,  Calcutta  a154