Co-op 27, 28, 29, 30, and 31 : five disease-resistant apple selections released for advanced testing Korban, S. S. contributor Purdue University. Agricultural Experiment Station. contributor text book [Urbana, Ill.] Agricultural Experiment Station, College of Agriculture, University of Illinois at Urbana-Champaign in cooperation with the Agricultural Experiment Station of Purdue University, West Lafayette, Indian [1990] 1990
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ENG Title from caption. Apples Diseases and pests Varieties Bulletin (University of Illinois at Urbana-Champaign. Agricultural Experiment Station), 789 https://www.biodiversitylibrary.org/bibliography/45653 22449730 10.5962/bhl.title.45653 IAI