USDA Databases physician assistant 10 years ago Resources: Nutrient Database Calorie Reference National Agricultural Library, Agricultural Research Service, U.S. Department of Agriculture. Sharing is caring... Share on Facebook (Opens in new window) Facebook Share on LinkedIn (Opens in new window) LinkedIn Share on X (Opens in new window) X Share on Pinterest (Opens in new window) Pinterest Email a link to a friend (Opens in new window) Email More Share on Reddit (Opens in new window) Reddit Share on Tumblr (Opens in new window) Tumblr