Byd diwydiant
By: awdur y llyfr hwn: Llifon Jones.
Contributors: University College of Wales. Centre for Educational Studies.; Project Defnyddiau ac Adnoddau y Swyddfa Gymreig.
Series: Economeg
Publisher: Y Ganolfan Astudiaethau Addysg
Published: 1990
Place of publication: Aberystwyth
Language: wel
Number of pages: 65
Subjects: Industry -- Study and teaching (Secondary) -- Great Britain.