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Preliminary Report of Pear Harvesting and Storage Investigations in Rogue River Valley

Claude Isaac LewisOregon State University. Agricultural Experiment StationClaude Clifton CateJohn Robert Magness

出版	Oregon Agricultural College Experiment Station, 1918
URL	http://books.google.com.hk/books?id=F7Q3zgEACAAJ&hl=&source=gbs_api