Dangos 3 canlyniad

Disgrifiad archifol
Shells
Rhagolwg argraffu Gweld:

Conchology

Notes on shells and an address on the subject given by D[avid] Harris Williams to the members of the Dyserth and District Field Club, 19 March 1917.

Fossils,

A classified and illustrated list by Thomas Pennant of fossils and fossil shells, with lists and notes sent to him by British and continental correspondents.

Thomas Pennant.