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6st [i.e. 6th] International Symposium on Apricot Culture and Decline, Yerevan, Armenian SSR, USSR 4-8 July 1977

出版	Armenian Scientific Institute of Viticulture, Oenology and Fruit Growing, 1980
URL	http://books.google.com.hk/books?id=CV4fAQAAMAAJ&hl=&source=gbs_api