There is more than one volume or copy available for this title.
Main entry uniform title:
The species concept from the point of view of a morphologist / R.A. Harper.
Soulsby no. 907c.
Botanical Society of America
Place of publication:
p. 229-233 ; 27 cm.
Reprinted from the American Journal of Botany, X: 229-233, May, 1923.
Additional corporate author(s):
Collective uniform title: