00348nam a2200157Ia 4500008004100000020000900041035000900050082001500059100001600074245004400090250000600134260002700140300000800167500000900175650000600184210723s9999||||xx |||||||||||||| ||und||  aNULL  a6264  a516.7BLAL  aLal, Bansi. 0aThree Dimensional Differential Geometry  a-  aDelhibAtma Ram & Sons  a244  a1069  a-