Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Betrem, J. G. 1931a. Ambrosiakevers. The coffee twig borers, Xyleborus morigerus Bldfd. and X. morstatti Haged, in Java. Handl. Zesde Ned. Indisch Natuurwet. Congr. Bandoeng (Java) p. 22-26.
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