Cyflwr yr amgylchedd : haf 1995 = State of the environment : Summer 1995.
Gwynedd (Cymru).Cyngor Sir.Datblygu Economaidd a Chynllunio.
[Wales] : Cyngor Sir Gwynedd, Datblygu Economaidd a Chynllunio,
[1995?]
Parallel Welsh and English text.