DAVIES, l et al. <br/><br/>
Envestigating 

 - London  Heinemann Educational  books  1973 
 - xiii, 434p.  ill.  26.5cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0435641603 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>540