TY  - BOOK
AU  - GRAHAM,Natasha
AU  - ROBERTS,Michael
TI  - Microcomputer, hardware, projects: Sinclair Spectrum and ZX81 add-on units 
SN  - 0905104641
PY  - 1983///
CY  - Cheshire
PB  - Sigma Technical Press
KW  - Komputery
UR  - http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=23433
ER  -