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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

Journal Article

Journal article

An historical study of the underlying assumptions for United States Food Guides from 1917 through the Basic Four Food Group Guide  [1987]

Haughton, B.; Gussow, J.D.; Dodds, J.M.;

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An historical research study examined US food guides to identify and compare the explicit and implicit assumptions upon which these guides have been based. This analysis ranged from the first official US government guide to the Basic Four Food Group Guide. The identified underlying assumptions of these guides were classified into 5 categories, each of which is separately discussed, viz.: food and nutrient needs; economics; food habits and taste; food supply concerns; and nutrition education.(wz)

来自期刊

Journal of nutrition education (USA)

ISSN : 0022-3182