Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Fig. 1. The USDA Food Guide Pyramid (based on USDA and U.S. Dep. of Health and Human Serv., 2000).





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HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
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
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