Whitney Frederick Lamson <br/><br/>
Elements of research 

 - 3 
 - Englewood Cliffs, New Jersey, USA  Prentice - Hall  1937 
 - xvi, 539p. 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research Methods