Patton, Michael Quinn <br/><br/>
How to use qualitative methods in evaluation 

 - London  Sage Publications Ltd  1987 
 - 176p. 
<br/><br/><label>ISBN: </label>0803931298 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental geology
<br/><br/><label>Dewey Class. No.: </label>361.61072 PAT