I tried to get a hold of this reference, but it's "embargoed." I am not sure if I will still be interested by then.
Evans, Howard E., "The Evolution of Social Life in Wasps" (1958). Er. Paper 38. https://digitalcommons.usu.edu/bee_lab_er/38
NOTE: The full-text of this Submission is currently under embargo. It will be available for download on Saturday, January 01, 2050.
Pete (Feb., 1950)
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