TY  - BOOK
AU  - Lebergott,Stanley
TI  - Manpower in economic growth: the American record since 1800 
PY  - 1964///
CY  - New York
PB  - McGraw-Hill
KW  - Working class
KW  - United States
KW  - History
KW  - Labor economics
N1  - Bibliographical footnotes
ER  -