Engelhart Max D <br/><br/>
Methods of educational research 

 - Chicago  Rand McNally and Company  1972 
 - xx, 553p. 
 - Rand McNally education .
<br/><br/><label>Source: </label>Books to be hide in OPAC 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research Methods