000
00300nam a2200121Ia 4500
008
220201s1981 xx 000 0 eng d
082
_a
621.3028
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GUP
100
_a
Gupta,RB&Sharma,BR
245
0
_a
Electrical engineering materials
260
_b
Satya prakasham
_c
1981
300
_a
316
942
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ddc
999
_c
83267
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83267