1.

図書
図書
1. Coal prospects and policies in IEA countries : 1983 review
International Energy Agency
出版情報: Paris : Organisation for Economic Co-operation and Development, 1984
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2.

図書
図書
2. Coal prospects and policies in IEA countries : 1987 review
International Energy Agency
出版情報: Paris : Organisation for Economic Co-operation and Development, 1988
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