000
00263nam a2200109Ia 4500
008
220201s2011 xx 000 0 eng d
100
_a
Seth
245
0
_a
Element of electrmegnetic field
260
_a
New Delhi
_b
Dhanppat rai
_c
2011
300
_a
583
942
_2
ddc
999
_c
65654
_d
65654