1. CULTURAL STUDIES OF THE POLLEN POPULATION EFFECT AND THE SELF-INCOMPATIBILITY INHIBITION
2. W. H. Chan(1982 ) Acid precipitation in Ontario Study. Daily precipitation chemistry listings and statistical summaries. July 15, 1980-December 31, 1981 . Air Resources Branch, Ontario Ministry of the Environment, 1 -327 .
3. Factors controlling the acidity of natural rainwater
4. Vitamins and the Germination of Pollen Grains and Fungus Spores