000 00316nam a2200133Ia 4500
008 241225s9999 xx 000 0 und d
020 _a0
082 _a621
_bBIS
100 _aBis.
245 0 _aIs 1395 :1982
260 _aNew Delhi :
_bBureau Of Indian Standard,
_c1994
365 _a230
650 _aApplied physics
999 _c30129
_d30129