000
00246nam a2200109Ia 4500
008
230512s9999 xx 000 0 und d
100
_a
Uppal, Shweta
245
0
_a
Science Text Book XII
260
_a
Delhi
_b
NCERT
650
_a
Science
942
_c
BK
999
_c
7353
_d
7353