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Directory of Information Resources in Agriculture and Biology
Agricultural Sciences Information NetworkNational Agricultural Library (U.S.)
出版National Agricultural Library, 1971
主題Science / Life Sciences / Biology
ISBN059843335X9780598433350
URLhttp://books.google.com.hk/books?id=x_yH16WM7jAC&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN