A guide to air photo interpretation of forest damage in Canada / by P. A. Murtha.

by Murtha, P. A.
Ottawa : Government of Canada, Canadian Forestry Service, 1972.

Series: Canadian Forestry Serivce Publication ; no. 1292

Spruce-budworm damage in Fundy National Park, New Brunswick / by P.A. Murtha.

by Murtha, P. A.
Ottawa : Canadian Forestry Service, 1973.

Series: Survey report (National Park Forest) ; no. 6