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Ecological Grading and Classification of Land-occupation and Land-use Mosaics

出版	Lands Directorate, Fisheries & Environment Canada, 1977
主題	Business & Economics / Development / Economic DevelopmentScience / Environmental Science
ISBN	06600077979780660007793
URL	http://books.google.com.hk/books?id=STXs9vclrNQC&hl=&source=gbs_api