00309n   a2200121 a 4500000002100000001000700021005001700028082001500045100001600060245006800076260003500144300000800179B B                 00535820220201170712.0  a519.2bM88  aRohatgi, VK  aAn introducrion to probility theory and mathematical Statistics  aNew DelhibWiley Easternc1988  a684