Designing environments for constructive learning 
ed. by Thomas M. Duffy, Joast Lowyck, David H. Jonasser 
 - Berlin;  Heidelberg;  New York   Springer  1993 
 - VIII, 374 p.  fig., tab., sch. ; 24 cm 
<br/><br/><label>ISBN: </label>0-387-56452-7;  3-540-56452-7 
<br/><br/><label>Source: </label>C-182531 
<br/><br/><label>Index Terms--Genre/Form: </label><br/> documentație
<br/><br/><label>Universal Decimal Class. No.: </label>437.03