Gewwald, N. J. (1980). The importance of fuelwood in Central America: An appraisal and a plan for action.
シカゴスタイル引用形Gewwald, N J. The Importance of Fuelwood in Central America: An Appraisal and a Plan for Action. 1980.
MLA引用形式Gewwald, N J. The Importance of Fuelwood in Central America: An Appraisal and a Plan for Action. 1980.
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