00410nam a2200109Ia 4500008004100000082002000041100001600061245011200077260006200189300001300251490003600264250404b        |||||||| |||| 00| 0 eng d  a515.64bC858.CV  aCourant, R.  aCalculus of variations, 1945-46 with supplementary notes and exercises by Martin Kruskal and Hanan Rubinb/  aNew York:bCourant Instt. of Mathematical Sciences,cn.d.  av, 281p.  aCourant Institute lecture notes