TY  - BOOK
AU  - Graham, Ian.
TI  - Screen shot programming series zx spectrum +: : step by step programming 
SN  - 0863180957
U1  - 005.101  1
PY  - 1984///
CY  - London
PB  - Dorling Kindersley .
KW  - Inside the computer
KW  - Writing your first program
KW  - Designing ypur own characters
ER  -