- Tymchak, A. E. 1977. Entomology [pp 4-10]. 31 pp..
- Tymchak, A. E. 1976. Entomology. Pages 4-10 in Intercepted plant pests 1974-1975. Canada Department of Agriculture, Plant Protection Division, Production and Marketing Branch. 29 p.
- Tymchak, A. E. 1978. Entomology. Pages 5-13 in Intercepted plant pests 1976-1977. Canada Department of Agriculture, Plant Quarantine Division, Production and Marketing Branch. 40 p.
- Tymchak, A. E. 1979. Entomology. Pages 8-14 in Intercepted plant pests 1977-1978. Canada Department of Agriculture, Plant Quarantine Division, Production and Marketing Branch. 43 p.
- Tymchak, A. E. 1980. Entomology. Pages 9-18 in Intercepted plant pests 1978-1979. Canada Department of Agriculture, Plant Quarantine Division, Production and Marketing Branch. 41 p.