Author
Pennsylvania. Bureau of International Commerce
2
Cork Inc. Chamber of Commerce and Shipping
1
Gale Research Inc
1
Italy. Ambasciata (U.S.). Ufficio commerciale
1
New York Chamber of Commerce
1
Philadelphia Chamber of Commerce
1
South Jersey Port Commission
1
Swedish Chamber of Commerce of the United States of America
1
Swiss-American Chamber of Commerce
1
United States. Department of the Treasury. Bureau of Statistics
1
Virginia State Port Authority Research Dept
1
Wilmington (Del.) Board of Trade
1
Wilson
1