Llyfryddiaeth cylchgronau Cymreig 1735-1850 = A bibliography of Welsh periodicals 1735-1850 /
Walters, Huw,1951-
National Library of Wales.
Aberystwyth  : Llyfrgell Genedlaethol Cymru, 
1993.
Parallel Welsh text and English translation
Includes bibliographical references and index.