Science for better living. - Washington For sale by the Supt. of Docs., U.S. Govt. Print. Off. 1968. - xlvi, 386 p. illus. (part col.) ports. - Its Yearbook of agriculture 1968 . - Yearbook of agriculture (Washington, D.C. : 1926) 1968. .

Includes bibliographies.

agr68000301 //r893


Agriculture--Research.
Agriculture and science.
Conservation of natural resources--United States.

S21 / .A35 1968

630/.72/073

1Ag84Y 1968