00463nam a2200169Ia 4500 54815 120803n ii |||gr||||Z||||||465 81-85624-85-2 514 Das,B.C, Author. Intermediate Trigonometry B.C.Das & B.N.Mukherjee Textual Documents Kolkata: U.N.Dhur & Sons Pvt Ltd. 103p. Intermediate Trigonometry G-Mathematics ddc BK 0 0 0 0 General SKBL SKBL G-T/G 2008-01-02 MA 00000 0 514 D 26 In 456/Old 2024-01-14 00:00:00 1 2008-01-02 BK MA 54765 54765