[Better plants and animals. - Washington, U.S. Govt. Print. Off., 1936-37] - 2 v. illus., ports., maps. 24 cm. - Its Yearbook of agriculture, 1936-1937 . - Yearbook of agriculture (Washington, D.C. : 1926) ; 1936-1937. .

Includes bibliographies.

agr55000011


Genetics--Research.
Plant breeding.
Livestock.

S21 / .A35 1936-1937

631.52