Abelson, Harold. <br/><br/>
Turtle geometry / 
Harold Abelson. 
 - Cambridge, Massachusetts :  The MIT Press,  1981. 
 - x, 477 p. 
<br/><br/><label>ISBN: </label>0262510375 :  KES 200 (don.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry--Study and teaching.<br/>Computer assisted instruction.
<br/><br/><label>LC Class. No.: </label>QA462  / .A23 1981