00314nam a2200133Ia 4500008004100000100001400041245004400055250001500099260001700114300000900131650001600140942000700156999001700163190216s9999||||xx |||||||||||||| ||und||  aSinha H C 0aThree Dimensional Differential Geometry  a1981st Ed.  bS Chand & Co  a402p  aMathematics  cBK  c30837d30837