Wadsworth, R., & Treweek, J. . O. (1999). Geographical information systems for ecology: An introduction. Longman.
シカゴスタイル引用形Wadsworth, Richard, , J O. Treweek. Geographical Information Systems for Ecology: An Introduction. London: Longman, 1999.
MLA引用形式Wadsworth, Richard, , J O. Treweek. Geographical Information Systems for Ecology: An Introduction. Longman, 1999.
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