000
00233nam a22000977a 4500
082
_a
500.207
_b
P12
100
_a
Koncept Books
245
_a
UGC-CSIR JRF/NET: Physical Sciences
260
_a
Dehradun
_b
Koncept books
_c
2012
942
_c
BK
999
_c
203807
_d
203807