000
00259nam a22001217a 4500
999
_c
35715
_d
35715
020
_a
9788178129709
082
_a
530/GUP
100
_a
Gupta R
245
_a
CSIR UGC NET Phy.Science
260
_a
Delhi
_b
Ramesh Book Depo
_c
2021
300
_a
829
942
_c
BK