A class book of mathematics for class XII Chakrabarty, S.K. . creator Bhagawati, Biswajit text N.Delhi S.Chand & company ltd c1998 1998 1st ed./ eng 460 p. ; Sajal Kanti Chakrabarty. Mathematics 510 CHA 8121917662 MAIN 081018 20201215121131.0