000 00299nam a22001097a 4500
008 230822b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
245 _aBhagirath
260 _aDelhi:
_bPublications Division,
_c1954
310 _aMonthly
942 _cCR
999 _c59344
_d59344