TY  - BOOK
AU  - Toft,L & McKay,A D D.
TI  - Practical mathematics
PY  - 1966///
CY  - [S.l.]
PB  - Sir Isaac Pitman & Sons
UR  - http://www.amazon.com/exec/obidos/ASIN/B001109Q6W/chopaconline-20
ER  -