Systemau gwybodaeth /
Doyle, Stephen,1954-
Williams, Howard.
National Language Unit of Wales.
Welsh Joint Education Committee.
Caerdydd : Uned Iaith Genedlaethol Cymru CBAC,
1998.
Addasiad Cymraeg gan = Welsh adaptation by: Howard Williams.
Yn cynnwys mynegai = Includes index.
Information storage and retrieval systems
Information technology