00321nam a2200109Ia 4500008004100000041000800041082000800049100003000057245007600087260004100163300000700204211209s1978    xx            000 0 und d  aeng  aMUK  aMUKOPADHAYAY, ASHOK KUMAR  aINTRODUCTION TO THE CALCULUS OF VARIATION FOR ENGINEERS AND ECONOMISTS   aNEW DELHIbKHANNA PUBLICATIONSc1978  a95