Ferber, Robert <br/><br/>
Research methods in economics and business / 
Robert Ferber & P.J. Verdoorn 
 - New York :  Macmillan ,  1962 
 - xiv, 573p. ;  24 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quantitative methods<br/>Mathematics<br/>Research methods
<br/><br/><label>Dewey Class. No.: </label>330.182  / FAR