1. Acorns as a cattle food;Anonymous;Brit. Food Jour.,1917
2. Acorns as food for poultry;Cranfield;Jour. Board of Agric. Great Britain.,1918
3. Eicheln und bucheckern als futtermittel;Engels;Landw. Vers. Sta.,1913
4. Feeding values of certain feeding stuffs;Fraps;Texas Agr. Exp. Sta. Bull.,1919
5. Textbook of dendrology;Harlow,1937