00473nam a2200193Ia 4500 STCL 230729s9999 xx 000 0 und d 9788120342224 STCL STCL EN 22 Rao, K Sankara Introduction to partial differential equations 3 PHI Learning Private Limited New Delhi 2012 488 p 295 English DDC 22 BK 90348 90348 0 0 DDC 0 0 STCAL STCAL GEN 2023-07-29 0 515.353 RAO-I J00423 2023-07-29 00:00:00 2023-07-29 BK