Co-op 27, 28, 29, 30, and 31 : five disease-resistant apple selections released for advanced testing
[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
University Library, University of Illinois Urbana Champaign
University of Illinois Urbana-Champaign
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