00355nam a22001337a 4500020001800000082001800018100001900036245006600055250001200121260003400133300001600167650001200183650002600195  a9788126508105  a530.15bBOA/M  a Boas, Mary L,  aMathematical methods in the physical sciences/cMary L. Boas,  a3rd Ed.  a New Delhi :bWiley,c  2007.  a837pb21cm.  aPhysics  a Mathematical physics