Vouland, G., J. Cornic, and P. Du Merle. 1990. Un cas de déperissement de jeunes Douglas lie à des attaques d'insectes (Dioryctria mutatella, Lepidoptera Pyralidae; Pityogenes quadridens, Coleoptere Scolytidae) [An example of young Douglas-fir dieback associated with insect attack (Dioryctria mutatella, Lepidoptera, Pyralidae and Pityogenes quadridens, Coleoptera, Scolytidae)]. Revue Forestière Française (Nancy) 42:510-512.
Vouland et al. 1990
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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