000 00261nam a2200109Ia 4500
100 _aPrasad Rajeshwer
942 _cBK
245 _aScience and technology
_bFuture perspectives
260 _aY. K. Publishers, Agra
_c1991
082 _a600 Pra
300 _axi,106pp
999 _c61324
_d61324