TY  - BOOK
AU  - Haywood, Daniel.
TI  - Creating arcade games on your zx spectrum
SN  - 0907563287
U1  - 005.101  1
PY  - 1983///
CY  - London
PB  - Interface publications
KW  - User defined graphics
KW  - Using logical operators
KW  - Adding interest to games
ER  -