Open Universityearth's Physical Resources Course Team & Open University, E. P. (1974). Implications. Open university press.
シカゴスタイル引用形Open Universityearth's Physical Resources Course Team , Earth's Physic Open University. Implications. Open university press, 1974.
MLA引用形式Open Universityearth's Physical Resources Course Team , Earth's Physic Open University. Implications. Open university press, 1974.
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