000 00282nam a2200121 a 4500
082 _a621.366
_bSOD/S
100 _aSodha, M.S.
245 _aSelf focusing of laser beams /
_cM.S. Sodha.
260 _c1974.
_bTATA MC GRAW HILL,
650 _aphysics
700 _aGhatak
942 _cBK
999 _c16969
_d16969