Dalen genhadol chwarterol y Gymdeithas er Ledaenu yr Efengyl
The quarterly Welsh language religious periodical of the Society for the Propagation of the Gospel. The periodical's main content was articles on the foreign missionary work of the society.
Publication Frequency: Quarterly
Publication Language: Welsh
Publication Location: London
Publisher Details: Y Gymdeithas er Lledaenu yr Efengyl]
