Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Kula, E., and W. Zbecki. 1997b. Pogromiska przyczyn powstawania gniazd kornikowych w drzewostanach wierkowych [Lightning-struck areas as the centres of bark-beetle-infested patches within spruce stands]. Sylwan 141:89-97.
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