Betts, Peter Wilfred <br/><br/>
Supervisory studies 

 - London  MacDonald and Evans  1973 
 - xvii,454p.  23cm. 
<br/><br/><label>ISBN: </label>0712119299 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Supervisory studies
<br/><br/><label>LC Class. No.: </label>HF5549.B454