Guba Egon G <br/><br/>
Fourth generation evaluation 
Guba Egon G; Lincoln Yvonna S 
 - London  Sage          1989 
 - 294p  cm. 
<br/><br/><label>Standard No.: </label>51736 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PHILOSOPHY
<br/><br/><label>Dewey Class. No.: </label>R2:f, M9