Ferber, Robert,  1922- <br/><br/>
Research methods in economics & business / 
by Robert Ferber and P. J. Verdoorn. 
 - New York :  Macmillan ;  c1962 [Reprinted 1970] 
 - 573 p. :  illus. ;  25 cm. 
<br/><br/>Includes bibliography and Index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics--Research.
<br/><br/><label>Dewey Class. No.: </label>330.72  / FER 1970