000 00266nam a2200121Ia 4500
365 _b6
942 _cBK
654 _a
245 _aOur research instititions
260 _aIndia
_bPublications Division
_c1996
082 _a506.154
300 _bHb
_c20.5cm
_aviii, 150
999 _c393615
_d393615
041 _aeng