Produced by Steven Giacomelli, Janet Blenkinship and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images produced by Core Historical Literature in Agriculture (CHLA), Cornell University) Formerly director of agricultural extension in the Pennsylvania State College and New Jersey State College of Agriculture.…
Or read it translated: 日本語 · 中文 · हिन्दी · Español · العربية · Français · বাংলা · Português · Русский · Bahasa Indonesia · اردو · Deutsch · Kiswahili · 한국어