Landsat verification of aerial sketch-mapping. 1978. Murtha, P.A.; Harris, J.W.E. Pages 417-427 in Proceedings of a Symposium on Remote Sensing for Vegetation Damage Assessment, February 14-16, 1978, Seattle, Washington. American Society for Photogrammetry, Falls Church, Virginia.
Air photointerpretation for balsam woolly aphid damage. 1970. Murtha, P.A.; Harris, J.W.E. Canadian Journal of Remote Sensing 1(5): 3-5.
Aerial photographic interpretation of forest damage: an annotated bibliography. 1969. Murtha, P.A. Government of Canada, Department of Fisheries and Forestry, Forestry Branch, Ottawa, ON. Information Report FMR-X-16. 76 p.