000
00307pam a2200121a 44500
008
160422s9999 xx 000 0 und d
082
_a
011.62 GUP
100
_a
Gupta, D. P. Sen
245
_a
What on earth is energy?
260
_a
New Delhi
_b
NCERT
_c
1989
300
_a
92p
650
_a
Children Collection
999
_c
84965
_d
84965