Common lichens of northeastern North AmericaTroy McMullin, Anderson, Frances (Lichenologist), Judith Pennanen, Catherine Pross · First published 2014Open the Tome
Guide to the Identification and Acquisition of Canadian Government PublicationsCatherine A. Pross · First published 1983Open the Tome
A guide to the identification and acquisition of Canadian Provincial government publicationsCatherine A. Pross · First published 1977Open the Tome
Government Publishing in the Canadian ProvincesA. Paul Pross, Catherine A. Pross · First published 1972Open the Tome
