00431nam a2200121Ia 4500008004100000082002000041100002900061245008400090260003000174300002100204500005100225700003300276250404b        |||||||| |||| 00| 0 eng d  a515.64bC262.CV  aCaratheodory, Constantin  aCalculus of variations and partial differential equations of the first orderb/  aNew York:bChelsea,c1982  axix, 402p. Index  a"Translated from the German by Robert B. Dean"  aDean, Robert B.etranslator.