Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Zabecki, W. 1988. Role of cambio- and xylophagous insects in the process of decline of silver fir stands affected by the industrial air pollution in Ojcow National Park. (In Polish). Acta Agraria et Silvestria. Series Silvestris 27:17-30.