00273nam a2200109Ia 4500008004100000041000800041082000800049100001600057245004900073260003300122300000800155211209s1966 xx 000 0 und d aeng aGRE aGREENSPAN D aINTRODUCTORY NUMERICAL ANALYSIS OF ELLIPTIC  bA HARPER INTERNATIONALc1966 a176