Trysorau cudd : planhigion Cwm Idwal = Nature's hanging gardens : the vegetation of Cwm Idwal NNR.
Cyngor Cefn Gwlad Cymru
Countryside Council for Wales.
Bangor : Cyngor Cefn Gwlad Cymru,
2003.
CCC205.
Welsh/English text inverted and bound back to back.
Plant populations