Pwdr, pydredd, pydru
By: Vicki Cobb ; darluniau gan Doffy Weir.
Contributors: Weir, Doffy.; Jones, Berwyn Prys.
Series: Ar drywydd gwyddoniaeth
Publisher: Ivan Corbett
Published: 1990
Place of publication: Penryn
Language: wel
Number of pages: 32
Subjects: Microbiology -- Juvenile literature.
Work titles: Lots of rot.
Notes: Arg. Saesneg gwreiddiol = Original English ed: London: A. & C.Black, 1988.

Seiliwyd yr arg. Saesneg gwreiddiol ar gyfrol a gyhoeddwyd = Original English ed. based on volume published: New York: J. B. Lippincott, (1988).

Addasiad Cymraeg gan =Welsh adaptation by: Berwyn Prys Jones.

Yn cynnwys mynegai = Includes index.

Addasiad Cymraeg o = Welsh adaptation of: Lots of rot.