00297nam a2200121Ia 4500082001900000100001800019245003700037260004300074300002200117500002600139500000500165700000500170  a515.1bC898.FS  aCarven, B. D.  aFunctions of several variablesb  aLondonbChapman & Hall/CRC Pressc1981  aviii, 136p. Index  a"Science paperbacks".  a  a