Plants responsible for hay fever
Contributors: Groh, Herbert; Canada. Dept. of Agriculture. Divsion of Botany
Series: Canada Dept. of Agriculture Publication -- 584; Canada Dept. of Agriculture Circular -- 127; Publication / Canada. Dept. of Agriculture -- no. 584.
Published: 1937
Language: eng
Subjects: Allergens; Allergènes; Hay fever; Rhume des foins