000 00293pam a2200133a 44500
082 _a673.4
_bSa73L
100 _aSarkar, S.
245 1 _aLEAD
_cTHE SCIENCE AND TECHNOLOGY
260 _aCalcutta
_bMukherjee
_c1964
300 _a223
650 _aLead
964 _gCIRC
997 _a78465 W
999 _c442592
_d442592