000
00258nam a2200121Ia 4500
100
_a
Vas Gratlan
942
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BK
245
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Geothermal energy
260
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New Delhi
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Learners Press
_c
1993
082
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J333.79
_b
Vas
300
_a
32
546
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English
999
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334826
_d
334826
041
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eng