Dyfeiswyr enwog
By: (golygu: W. J. Jones).
Contributors: Jones, W. J. 1928-
Edition: Ail arg.
Series: Cyfres enwogion y byd -- 3
Publisher: Gwasg Cambria
Published: 1991
Place of publication: Aberystwyth
Language: wel
Number of pages: 145
Subjects: Inventors -- Biography -- Juvenile literature.
Notes: Arg gwreiddiol = Originally published: 1982.

Cyfranwyr = Contributors: Eirian Thomas Elin Phillips W. J. Jones Medwen Roberts G. E. Thomas Brenda Lewis John Williams John Jenkins Geraint Jenkins.

Yn cynnwys mynegai = Includes index.