Friendly, Michael <br/><br/>
Advanced logo : a language for learning 

 - Mahwah, N.J:  Lawrence Erlbaum Associates,  1988 
 - xiv, 661 p. : ill. ; 24 cm 
<br/><br/><label>ISBN: </label>898599334 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LOGO (Computer program language)
<br/><br/><label>Dewey Class. No.: </label>005.13 FRI