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Studies on the Development of Parthenocarpic and Seeded Pears, Pyrus Communis L., in Relation to Synthetics and Natural Growth Regulators

Gonzalo Felipe Gil Salaya

出版	University of California, Davis, 1972
URL	http://books.google.com.hk/books?id=REOt8PtfIc4C&hl=&source=gbs_api