Protein-methionine-energy relationship in laying diets for chickens /
Olsen, George,author.
Lockhart, William Clarence,author.
Bryant, Reece L.(Reece Lawrence),1898-author.
Bolin, D. W.(Donald William),1896-author.
North Dakota Agricultural Experiment Station (Fargo)
Title from front cover.
Includes bibliographical references (page 17).