- Nijholt, W. W. 1978a. Ambrosia beetle, a menace to the forest industry. 8 p..
- Nijholt, W. W., and T. S. Sahota. 1974. Changes in triglyceride fatty acids during brood production of Douglas-fir beetles (Coleoptera: Scolytidae). Canadian Entomologist 106:927-932.
- Chapman, J. A., and W. W. Nijholt. 1965. Proportion of old and young adults in an overwintering population of the ambrosia beetle, Trypodendron lineatum (Oliv) . Canada Department of Forestry, Entomology and Pathology Branch, Bimonthly Progress Report 21:3-4.
- Chapman, J. A., and W. W. Nijholt. 1980a. Time of attack flight of ambrosia beetle Trypodendron lineatum (Oliv.) (Coleoptera: Scolytidae) in relation to weather in coastal British Columbia. Canada Department of the Environment, Canadian Forestry Service, Pacific Forest Research Centre, Information Report BC-R-5. 23 p.
- Chapman, J. A., and W. W. Nijholt. 1980b. Times of log attack by the ambrosia beetle Trypodendron lineatum in coastal British Columbia. Canada Department of the Environment, Canadian Forestry Service, Pacific Forest Research Centre, Victoria, British Columbia, Information Report BC-X-207. 7 p.
- Dyer, E. D. A., and W. W. Nijholt. 1965. Observations of overwintering Pseudohylesinus and Trypodendron . Canada Department of Forestry, Forest Entomology and Pathology Branch, Bi-monthly Progress Report 21:3.
- Nijholt, W. W. 1965. Moisture and fat content in the ambrosia beetle Trypodendron lineatum (Oliv) . Entomological Society of British Columbia, Proceedings 62:16-18.
- Nijholt, W. W. 1967. Moisture and fat content during the adult life of the ambrosia beetle, Trypodendron lineatum (Oliv) . Entomological Society of British Columbia, Journal 64:51-55.
- Nijholt, W. W. 1969. Fat content of the ambrosia beetle, Trypodendron lineatum (Oliv) during attack and brood production . Entomological Society of British Columbia, Journal 66:29-31.
- Nijholt, W. W. 1970. The effect of mating and presence of the male ambrosia beetle, Trypodendron lineatum, on "secondary" attraction . Canadian Entomologist 102:894-897.
- Nijholt, W. W. 1973a. Ambrosia beetle attacks delayed by turpentine oil . Canada Department of Fisheries and Forestry, Forestry Branch, Bi-monthly Research Notes 29:36.
- Nijholt, W. W. 1973b. The effect of male Trypodendron lineatum (Coleoptera: Scolytidae) on the response of field populations to secondary attraction . Canadian Entomologist 105:583-590.
- Nijholt, W. W. 1978b. Evaluation of operational watermisting for log protection from ambrosia beetle damage. Canada Department of the Environment, Canadian Forestry Service, Pacific Forest Research Centre, Report BC-P-22-78.
- Nijholt, W. W. 1979a. Deodorant protection in the forest. Canada Department of the Environment, Canadian Forestry Service, Pacific Forest Research Centre, Information Forestry 8(2):Summer, 1979.
- Nijholt, W. W. 1979b. Pine oil delays attack of ambrosia beetles on piled log sections . Canada Department of the Environment, Canadian Forest Service, Bimonthly Research Notes 35:22.
- Nijholt, W. W. 1979c. The striped ambrosia beetle Trypodendron lineatum (Oliv.). An annotated bibliography. Canada Department of the Environment, Canadian Forestry Service, Pacific Forest Research Centre, Information Report BC-X-121. 35 p.
- Nijholt, W. W. 1980. Pine oil and oleic acid delay and reduce attacks on logs by ambrosia beetles (Coleoptera: Scolytidae) . Canadian Entomologist 112:199-204.
- Nijholt, W. W. 1981. Ambrosia beetles in alder . Canada Department of the Environment, Canadian Forestry Service, Research Notes 1:12.
- Nijholt, W. W. 1983. Flight behavior of ambrosia beetles near free-standing sticky-screen traps . Canada Department of the Environment, Canadian Forestry Service, Research Notes 3:8-9.
- Nijholt, W. W., and J. A. Chapman. 1964. Uptake of water by the ambrosia beetle Trypodendron following dessication . Canada Department of Forestry, Forest Entomology and Pathology Branch, Bi-monthly Progress Report 20:3-4.
- Nijholt, W. W., and J. A. Chapman. 1968. A flight trap for collecting living insects . Canadian Entomologist 100:1151-1153.
- Nijholt, W. W., and L. H. McMullen. 1980. Pine oil prevents mountain pine beetle attack on living lodgepole pine trees . Canada Department of the Environment, Canadian Forestry Service, Bimonthly Research Notes 36:1-2.
- McMullen, L. H., L. Safranyik, and W. W. Nijholt. 1981. Pine oil protects living trees from attack by three bark beetle species, Dendroctonus spp (Coleoptera: Scolytidae). Canadian Entomologist 113:337-340.
- Nijholt, W. W., and T. S. Sahota. 1974. Changes in triglyceride fatty acids during brood production of Douglas-fir beetles (Coleoptera: Scolytidae) . Canadian Entomologist 106:927-932.
- Nijholt, W. W., and J. Schonherr. 1976. Chemical response behaviour of scolytids in West Germany and western Canada . Canada Department of the Environment, Canadian Forestry Service, Bimonthly Research Notes 32:31-32.
- Richmond, H. A., and W. W. Nijholt. 1972. Water misting for log protection from ambrosia beetles in B. C. Canada Department of the Environment, Canadian Forestry Service, Pacific Forest Research Centre, Information Report BC-P-4-72. 34 p.
- Sahota, T. S., J. A. Chapman, and W. W. Nijholt. 1970. Ovary development in a scolytid beetle Dendroctonus pseudotsugae (Coleoptera: Scolytidae): effect of farnesyl methyl ether . Canadian Entomologist 102:1424-1428.