000
00253nam a2200109Ia 4500
008
230512s9999 xx 000 0 und d
100
_a
verma,h.c.
245
0
_a
concepts of physics
260
_a
new delhi
_b
bharti bhawan
650
_a
physics
942
_c
BK
999
_c
6829
_d
6829