problem archimedes wrote a letter to the scholars in the library of alexandria, who apparently had downplayed the importance of archimedes' works. in this letter, he challenges them to count the numbers of cattle in the herd of the sun by solving a number of simultaneous diophantine equations, some...
nutrition programs ers conducts research on usda's child nutrition programs and their role in children's food security, diets, and well-being. ers studies programs such as the national school lunch program. data products view by topic: animal products animal policy & regulatory issues aquaculture cattle...