003570000a22001330004500020001600000060000800016082001800024100001500042245004500057260004500102260000900147300000800156650005900164  a0 706905881  a100  a510.243 3 MON  aMonga, G S  aMathematics and statistics for economics  aNewdelhi, Vikas Publishing House Pvt Ltd  c1972  a623  aMathematical reasoning/common logarithms/number system