586с

1935г

TRANSPORTATION BY WATER

AI By ^0. "

EMORY R. JOHNSON, Ph-D., Sc.D.

Professor of Transportation and Commerce

GROVER G. HL'EBNER, Ph.D.

Professor of Commerce and Transportation

ARNOLD K HENRY, Ph.D.

Assistant Professor of Transportation and Commerce

WHARTON SCHOOL OF FINANCE AND COMMERCE UNIVERSITY OF PENNSYLVANIA

D. APPLETON-CENTURY COMPANY

INCORPORATED New York 1935 london