查詢 text:"Research Environmental aspects -- United States." ，共 2 筆
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10 0 0 0 0Preparing for the 21st century :the environment and the human future
- 作者: National Academy of Sciences (U.S.)
- 出版: [Washington, D.C.] : The Academy ©1997.
- 資料類型: 電子書
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5 0 0 0 0
Research programs of the U.S. Bureau of Mines :first assessment, 1994
- 作者: National Research Council (U.S.).
- 出版: Washington, D.C. : National Academy Press 1994.
- 資料類型: 電子書