00000nam a2200000 a 4500 20251203114944.0 9781493976294 515.353 KOM Komech, A. I. Komech, Andrew Principles of partial differential equations _ 1st South Asia ed New York Springer 2018 x, 161 p. ill. 24 cm. PB Problem books in mathematics. _ Mathematics Mathematical analysis Differential equations Differential equations, Partial _ _ _ 216352 C 204626 204626 0 0 0 0 PU PU 2020-06-22 476.00 0 515.353 KOM 216352 BK