Board of Professional Certification

Autor: Hunsaker, Carolyn T., Breshears, David D., Cid, Carmen, Devall, Margaret, Handel, Steven, Redfield, Garth, Wickland, Diane
Zdroj: Bulletin of the Ecological Society of America, 2008 Oct 01. 89(4), 346-348.
Databáze: JSTOR Journals