000
00258nam a2200109Ia 4500
008
190216s9999||||xx |||||||||||||| ||und||
100
_a
Sharma R & Singh V
245
0
_a
Physics Guide
260
_b
Prakashan A S Pub
_c
1989
300
_a
2113p
942
_c
BK
999
_c
33209
_d
33209