Wragg, E. C <br/><br/>
An introduction to classroom observation / 
E. C. Wragg 
 - London :  Routledge,  1994 
 - 136 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0415096278  RM77.90 
<br/><br/><label>LCCN: </label>93-022656 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Observation (Educational method)