00421nam a2200157 a 450000500170000002000180001708200180003510000150005324500530006825000120012126000540013330000280018750000190021570000150023470000140024920251203112031.0  a9780521139878  a510.2453bRIL  aRiley, K.F  aMathematical methods for physics and engineering  a3rd ed.  aNew DelhibCombridge University Pressc1998-R2010  axxvii,1333p.c24cm.bPB  aincludes index  aHobson M.P  aBence S.J