What foods can you count on to supply vitamin A and vitamin C (ascorbic acid)? Does your family get generous amounts of these foods in every day's meals and snacks? If so, you're a better meal planner than a great many Iowa women.
Willis, Elisabeth and Swanson, Pearl
"Keys to Vitamins A and C,"
Iowa Farm Science: Vol. 9
, Article 4.
Available at: https://lib.dr.iastate.edu/farmscience/vol9/iss10/4