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Human Conservation

United States. National Resources Planning BoardLawrence Kelso Frank

其他書名	The Story of Our Wasted Resources
出版	U.S. Government Printing Office, 1943
URL	http://books.google.com.hk/books?id=raIwBNJcyuAC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN