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Applied general statistics
Croxton, Frederick Emory, (1956)
Statistics : methods and applications
Griffin, John I., (1962)
Statistics as Applied to Economics and Business
Wessel, Robert H., (1965)
Croxton, Frederick Emery, (1968)
Measures of exports of the United States
Cowden, Dudley J., (1931)
Measures of Exports of the United States