American agriculture, 1899-1939 : a study of output, employment, and productivity /
- New York : NBER , 1942
- xxii, 440p. : ill. ; 24 cm.
Includes bibliographical references and index.
Agriculture--United States
Economic aspects
630 / NBER
Includes bibliographical references and index.
Agriculture--United States
Economic aspects
630 / NBER