Research methods in economics & business /
Ferber, Robert,
Research methods in economics & business / by Robert Ferber and P. J. Verdoorn. - New York : Macmillan, 1962. - 573 pages : illustrations ; 25 cm.
Includes bibliography.
Economics--Research.
Research methods in economics & business / by Robert Ferber and P. J. Verdoorn. - New York : Macmillan, 1962. - 573 pages : illustrations ; 25 cm.
Includes bibliography.
Economics--Research.
