R.H. Bridson The Natterjack Toad - Its Distribution in S.W. Scotland Zoology TDGNHAS Series III, 53 (1977-78), 46(WARNING very large file size: 84.57 MB)
R.H. Bridson Saltmarsh: Its Accretion and Erosion at Caerlaverock National Nature Reserve, Dumfries Geology, Quaternary geology TDGNHAS Series III, 55 (1980), 60(WARNING very large file size: 42.93 MB)
