000 00294 a2200133 4500
082 _a53(09)
_bCHA
100 _aChhatwal ,G.R.
245 _aHistory of physics
300 _a982p.
653 _a53(09)
_aPhysics
942 _2ddc
_cBB
260 _aNew Delhi
_bAnmol
_c1995
020 _a81-7488-133-6
999 _c335214
_d335214