By Rao A.D.   Day W.H.   in Energy Conversion and Management

ISSN:0196-8904|37|6|909-914

Elsevier‎(1996)‎

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By Rao A.D.   Dube S.K.   Sinha P.C.   in Environment International

ISSN:0160-4120|21|5|667-670

Elsevier‎(1995)‎

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