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Cat. no.
Title
CZK
EUR
ESC 16170
Xie Z., Qiu J., Chen X., 2013: Decline of nest site availability and nest density of underground bees along a distance gradient from human settlements. 9 pp. Entomological Science 16(2): 170-178.
50
2
JJS 09319
Xu Z-F., He J-H., Terayama M., 2003: The Mesitiinae of China (Hymenoptera. Bethylidae). 14 pp. [53242] Japanese Journal of systematic Entomology (N.S.) 9(2): 319-332.