TY  - BOOK
AU  - Barger, Harold and Landsberg, H. H.
AU  - Landsberg, H. H. ; jt. auth.
TI  - American agriculture, 1899-1939: a study of output, employment and productivity
U1  - 338.10973 
PY  - 1942///
CY  - New York
PB  - NBER
ER  -