Ruppel, D.H.
-
Termites
-
Carpenter ants
-
A selected list of forest and miscellaneous insects of coastal British Columbia (Not for Publication)
-
Prince Rupert Forest District
-
A compilation of forest insects collected from plantations and reproduction stands in coastal British Columbia
-
The balsam woolly aphid, Adelges piceae (Ratz.) in British Columbia, 1964
Harris, J.W.E.; Ruppel, D.H.; Allen, S.J.; Collis, D.G.
Year: 1964
Catalog ID: 23991
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
-
Status of the balsam woolly aphid in British Columbia in 1963 (Unpublished report)
Year: 1963
Catalog ID: 27720
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
-
The balsam woolly aphid in British Columbia, 1960
Silver, G.T.; Ruppel, D.H.; Allen, S.J.
Year: 1962
Catalog ID: 23888
Issued by: Pacific Forestry Centre
Availability: PDF (download)