Principal Larrea bees of the Southwestern United States
Hurd, P.D., Linsley, E.G.
Principal Larrea bees of the Southwestern United States - Washington 1975 - 1-74 p. - Bees Washington Smithsonian Conributions to Zoology. Bulletin No.193 .
Principal Larrea bees of the Southwestern United States - Washington 1975 - 1-74 p. - Bees Washington Smithsonian Conributions to Zoology. Bulletin No.193 .