by Assink,J W | .
by Saul Pleeter | .
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by Energy Policy Modeling | .
by Roelof A A Oldeman | .
by Karl-Eugen Wadekin | .
by Karl Engen Wadekin | .
by J. Tinsley | J. F. Darbyshere.
by T. Satoo | .
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by Martinus Nijhoff | .
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