Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Lockeretz et al. Agron J.1980; 72: 65-72
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The SCI Journals Crop Science Vadose Zone Journal
Journal of Natural Resources
and Life Sciences Education		 Soil Science Society of America Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 1980 by the American Society of Agronomy.