TY  - BOOK
AU  - Abelson,Harold
AU  - Disessa, Andrea A
TI  - Turtle geometry: : The computer as a medium for exploring mathematics
T2  - Series in artificial intelligence
SN  - 0-262-51037-5
PY  - 1980///
CY  - Cambridge: 
PB  - The MIT Press, 
KW  - Geometry
KW  - Turtle geometry
ER  -