共 50 条
- [47] LABOR SCARCITY AND PROBLEM OF AMERICAN INDUSTRIAL EFFICIENCY IN 1850S - COMMENT JOURNAL OF ECONOMIC HISTORY, 1967, 27 (03): : 383 - 390
- [48] IRON ROAD TO THE WEST - AMERICAN RAILROADS IN THE 1850S - STOVER,JF AMERICAN HISTORICAL REVIEW, 1979, 84 (05): : 1477 - 1478