Ptolemy: Towards a Linguistic Atlas of the Earliest Celtic Place-Names of Europe: Papers from a Workshop, Sponsored by the British Academy, in the Department of Welsh, University of Wales, Aberystwyth, 11-12 April 1999 / edited by David N. Parsons & Patrick Simis-Williams. Aberystwyth, CMCS, 2000. 188 p., mapas. 25 cm.