Ferber, Robert <br/><br/>
Research methods in economics and business 
by Robert Ferber and P.J. Verdoorn 
 - New York  Macmillan  1962 
 - 573p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics --Research
<br/><br/><label>Dewey Class. No.: </label>I551 F373