Columbia subject headings:
Mycology--Research--Canada--History.
Plant diseases--Research--Canada--History.
Plant diseases--Study and teaching--Canada--History.
Harvard subject headings:
Mycology--Research--Canada--History.
Plant diseases--Research--Canada--History.
Plant diseases--Study and teaching--Canada--History.
Princeton subject headings:
Mycology--Research--Canada--History.
Plant diseases--Research--Canada--History.
Plant diseases--Study and teaching--Canada--History.