amgylchedd a datblygiad
Subtitle: y ffordd o Rio i'r Rhinogydd = Environment and development on the road fron Rio to the Rhinogydd.
Series: Darlith Cymru heddiw Eisteddfod Genedlaethol Cymru
Publisher: Llys yr Eisteddfod Genedlaethol
Published: 1993
Language: wel
Number of pages: 1717
Other titles: Environment and development on the road from Rio to the Rhinogydd.
Notes: Welsh and English text.