TY  - BOOK
AU  - Salter,Mary
ED  - International Society for Technology in Education
TI  - Exploring recursion with logo writer: teacher's manual 
SN  - 1564840328
U1  - 000  23
PY  - 1993///
CY  - Oregon
PB  - International Society for Technology in Education
KW  - Computer science, information, general works
ER  -