515.3 MAN\D Mandal, Nanigopal Differential equations : ordinary and partial / Nanigopal Mandal and Biswadip Pal. - 3rd ed.. - Kolkata : Books and Allied, 2019 760p. include bibliography and index 9788194243762 : Rs. 665.00 * Mathematics - differential calculas and equations. * Pal, Biswadip, Auth * Title
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