Gay, L.R <br/><br/>
Educational research  : competencies for analysis and application 
L.R. Gay 
 - 3rd ed. 
 - New York:  Merrill,  1990. 
 - xx, 569p. 
<br/><br/>Includes index 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>0-02-946117-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational research
<br/><br/><label>Dewey Class. No.: </label>370.78  / GAE