Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Schlup, J. 1987. Untersuchungen zur Populationsdynamik von Ips typographus L. and zur Biologie seines haeufigsten Praedatoren Thanasimusformicarius L. Unpublished dissertation, University of Bern, Switzerland.
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