000 00294nam a22001097a 4500
008 230526b |||||||| |||| 00| 0 eng d
022 _a0972-1177
040 _aNational Science Library
_cNational Science Library
245 _aJK science
260 _aJammu:
_bAnnil Mahajan,
_c2005
942 _cCR
999 _c35467
_d35467