Author:McGregor,D.C. Year:1959 Title:Spores and pollensfrom some Mesozoic deposits of northern Canada. Reference: McGregor,D.C. (1959) Spores and pollensfrom some Mesozoic deposits of northern Canada. International Botanical Congress, 9th, Proceedings, Abstracts Vol. 2 P. Google Academy: try to search by title in english