Walker, Rob. <br/><br/>
A guide to classroom observation / 
Rob Walker Clem Adelman ; photographs by Janine Wiedel. 
 - London :  Methuen,  1975 
 - 178 p. :  ill. ;  23 cm. 
<br/><br/>Bibliography : p. 175 
<br/><br/><label>ISBN: </label>12104 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Observation (Educational method)