Bee family oxaeidae with a revision of the North American species (Hymenoptera :
Hurd, P.D., Linsley, E.G.
Bee family oxaeidae with a revision of the North American species (Hymenoptera : - Washington 1976 - 75 p. - No. 220; Smithsonian Contribut .
Bee family oxaeidae with a revision of the North American species (Hymenoptera : - Washington 1976 - 75 p. - No. 220; Smithsonian Contribut .