Widok standardowy
Widok MARC
Clark, John L. (botanika). (Personal Name)
Forma odrzucona:
- Clark, John Littner.
Kp. Floristic checklist of the Mache-Chindul mountains of Northwestern Ecuador / by John L. Clark, David A. Neill and Mercedes Asanza. - Washington, D.C., 2006.
http://www.botany2001.org
LCA online
ABES online
Systematics of Glossoloma (Gesneriaceae) / John Littner Clark. - Ann Arbor, 2009. - (Systematic Botany Monographs ; Vol. 88). (Department of Biological Sciences, The University of Alabama).