Sithichai Wacharayothin <br/><br/>
The effects of teacher training on teacher wait-time, teacher questioning behavior and student cognitive achievement in chemistry  [microform] / 
by Sithichai Wacharayothin 
 - Ann Arbor, Mich. :  University Microfilms International,  1987 
 - 3 microfiches ;  11 x 15 cm. 
<br/><br/>Thesis (Ph.D.)-University of Maryland College Park, 1987 
<br/><br/><label>ISBN: </label>Y910041199 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemistry--Teacher training<br/>Teachers--Rating of