Spessivtsev, P. (. P. 1913b. Proekt sistematicheskikh issledovanii geograficheskovo rasprostraniia koroedov v lesakh Rossiiskoi imperii i programma dlya sobiraniya koroedov [A project of systematic research of the geographical expansion of bark beetles in the forests of the Russian empire]. Lessnoi Zhurnal 1-2:289-293 [reprint paged 1-8].
Spessivtsev 1913
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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