On cover: National Museum of Wales / Amgueddfa Genedlaethol Cymru.
Cover title.
The status and distribution of the freshwater pearl mussel (Margaritifera margaritifera [L.,1758]) in Wales : report on the 1997 survey by Ian J. Killeen. Published by Cyngor Cefn Gwlad Cymru in 1998. Publication and catalogue information, links to buy online and reader comments.