TY  - BOOK
AU  - Crust, Rita
AU  - Williamson, Trevor
TI  - Focus shape and space core
SN  - 0748711457
AV  - QA135.5 .C7 1991
PY  - 1991///
CY  - England
PB  - Stanley Thornes (P) Ltd
KW  - Shape - space
KW  - Mathematics
ER  -