Llygredd aer
Subtitle: yr effaith ar eich iechyd, gwybodaeth i'r cyhoedd = Air pollution : what it means for your health, the public information service.
Contributors: Great Britain. National Assembly for Wales.
Publisher: Welsh Assembly Government = Llywodraeth Cynulliad Cymru
Published: 2002
Place of publication: Cardiff
Language: eng
Number of pages: 16
Subjects: Air quality -- Wales.
Other titles: Air pollution : what it means for your health, the public information service.
Notes: Teitl clawr = Cover title.

Testun Cymraeg/Saesneg tête-bêche = Welsh/English text tête-bêche.