00396nam a22001457i 4500001001000000005001700010008004100027082001800068100002400086245004200110260004400152300001700196650001900213020001800232SXC02163120260819093714.0260101s1993    ii            000 0 eng d  a539 SEH-M222  aSehgal, D L, et al.10aModern physics /cSehgal, D L, et al.  abSultan Chand & Sons, New Delhi,c1993  ap. ;c22 cm. 0aModern physics  a9780030979750