Mynegai polisi =
Subtitle: Policy index.
Series: Adolygiad cyntaf cynllun y Parc Cenedlaethol = -- National Park plan review; Adolygiad cyntaf cynllun y Parc Cenedlaethol
Publisher: Parc Cenedlaethol Eryri = Snowdonia National Park
Published: 1983
Place of publication: Penrhyndeudraeth
Language: eng
Number of pages: 16
Notes: Welsh and English text.