Hultgren, Thor
American transportation in prosperity and depression / Thor Hultgren - New York : NBER , 1948 - xxxiii, 397p. : ill. ; 23 cm.
Includes bibliographical references and index.
Transport and communications
Business cycles
Railways
385.073 / HUL
American transportation in prosperity and depression / Thor Hultgren - New York : NBER , 1948 - xxxiii, 397p. : ill. ; 23 cm.
Includes bibliographical references and index.
Transport and communications
Business cycles
Railways
385.073 / HUL