TY  - BOOK
AU  - Hoyles Celia.
AU  - Sutherland Rosamund.
TI  - Logo Mathematics in the classroom
SN  - 0-415-07799-0
U1  - 372.7 HOY 
CY  - London,Newyork
KW  - SCE
N1  - Includes bibliographical references and index
ER  -