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The Essentials of a Successful Self-feeder for Swine, for Concentrated Feeds

Andrew Corrie McCandlishArthur Thomas ErwinFrank RobotkaH. A. BittenbenderJohn Louis HorsfallJohn Marcus EvvardLouis Hermann PammelMartin MortensenC. C. CulbertsonCharlotte Maria KingEarl WeaverFrederick Azel FentonJay Brownlee DavidsonR. A. RudnickL. A. LundeRussell DunnWilliam Arthur Foster

出版	Agricultural Experiment Station, Iowa State College of Agriculture and Mechanic Arts, 1921
URL	http://books.google.com.hk/books?id=8OFQAQAAMAAJ&hl=&source=gbs_api