Krishnan, Shanti Radha <br/><br/>
Conceptual change in chemistry through cooperative problem-solving  [microform] / 
by Shanti Radha Krishnan 
 - Ann Arbor, Mich. :  University Microfilms International,  1991 
 - 2 microfiches ;  11 x 15 cm. 
<br/><br/>Thesis (Ph.D.)-North Carolina State University, 1991 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Concept learning<br/>Problem solving