Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Kudela, M., and R. Wolf. 1963. [Participation of bark- and wood-destroying insects in the dying of Norway spruce and Scots pine in stands damaged by industrial air pollution] . Prague, Vysoka Skola Zemedelska, Lesnicka Fakulta, Sbornik 6:157-189.