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Canadian Havens from Hay Fever
Canadian Havens from Hay Fever
Author: none
This publication presents up-to-date information on the incidence in Canada of ragweed pollen, the main cause of hay fever, and is intended to help sufferers plan their Canadian vacations accordingly. It describes the biology of pollen, the different kinds of ragweed, distribution of pollen causing hay fever, Ragweed pollen air indexes and contr...  more »
ISBN: 197923
Publication Date: 1973
Pages: 23
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Publisher: Canada Department of Agriculture
Book Type: Paperback
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