00282n   a2200121 a 4500000002100000001000700021005001700028082002200045100001800067245003100085260003200116300001200148B B                 01422720220201182406.0  a510.24339bN4 MAT  aSimon, Carl P  aMathematics for economists  aNorton W.W.bNew Yorkc1994  axxiv930