The Importance of Selecting a Sampling Model Before Data Collection: An Example Using the Endangered Humboldt Milk-vetch (Astragalus agnicidus Barneby)

Autor: Pickart, Andrea J., Stauffer, Howard B.
Zdroj: Natural Areas Journal, 1994 Apr 01. 14(2), 90-98.
Databáze: JSTOR Journals