00455nam a2200145Ia 4500100003300000942000700033654001400040245007000054260002800124082002100152300000800173546001200181999001700193952009900210  aBrahma Nand & others/ Tyagi   cBK  aspherical  aSpherical Harmonics  and Partial  differential  equations  8th ed  bKedar nath ram nath co.  a515.353bNAN/TYA  a168  aENGLISH  c26387d26387  001040708CRCaCRCEbCRCEd2023-03-17l0o515.353 NAN/TYAp11709r2023-03-17w2023-03-17yBK