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Bulletin

Frank Nelson FaganFrederick Fouse LiningerFrederick Pattison WeaverJonathan Winbourne WhiteJulia Moesel HaberPennsylvania State College. Agricultural Experiment StationStuart Ward FrostWalter Spurgeon BeachWarren Bryan Mack

出版	Pennsylvania State College, School of Agriculture and Experiment Station, 1928
URL	http://books.google.com.hk/books?id=XmhRAQAAMAAJ&hl=&source=gbs_api