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Software
Hardware
Book
Magazine
Entity
Group
License
Lock-Keeper
Release Date
1983
Original Publisher
J.J. Donoher (UK)
Min. Hardware
ZX-Spectrum 48K
Language
English
Genre
General: Education
Max. Players
1
Original Price
£4.95
Remarks
"to encourage reasoning skills"
Magazine Advertisements
Home Computing Weekly
issue
#22-1983/Aug/2 special "week#1"
page
38
- Classified
Home Computing Weekly
issue
#23-1983/Aug/9 special "week#2"
page
37
- Classified
Home Computing Weekly
issue
#24-1983/Aug/16 special "week#3"
page
37
- Classified
Popular Computing Weekly
issue
v.2 #28-1983/Jul/14 special "week#2"
page
40
- Classified
Popular Computing Weekly
issue
v.2 #29-1983/Jul/21 special "week#3"
page
41
- Classified
Popular Computing Weekly
issue
v.2 #30-1983/Jul/28 special "week#4"
page
40
- Classified
Sinclair User
issue
#18-1983/Sep
page
138
- Classified
Your Computer
issue
v.3 #9-1983/Sep
page
213
- Classified
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