00326nam a22001217a 4500003000400000005001700004008004100021040002500062100001600087245005500103260003500158300001100193OSt20260226090835.0260226b        |||||||| |||| 00| 0 eng d  cNVSU Library Bambang  aCourant, R.  aMethods of Mathematical Physics vol. 1cR. Courant  aNY:bInterscience Pub.,c1953.  a561 p.