1. AGRICULTURE CANADA, 1986 Information Pesticides 8 (juin) (Ottawa: Direction generale de la recherche).
2. AGRICULTURE CANADA, 1987 Information Pesticides 9 (mars) (Ottawa: Direction generale de la recherche).
3. AGRICULTURE CANADA, 1988 Information Pesticides 10 (mars) (Ottawa: Direction generale de la recherche).
4. P. AYOTTE, 1987 Micropollutants organiques: Campagne d‘echantillonnage 1986 (Quebec, Ministere de I'Environnement du Quebec).
5. 202. Note: Significance Factors for the Ratio of a Poisson Variable to Its Expectation