CLAYDEN, STEPHEN R.PENTECOST, ALLANMacG. DAWSON, ROBERT J.2020-03-202020-03-2020040334-5114http://hdl.handle.net/10222/78065Growth of the Lichen Rhizocarpon lecanorinum, with Comments on Aplin-Hill and Lichenometric CurvesText371-3379