Britton, Wilton Everett. Guide to the insects of Connecticut - Hartford : State Geological and Natural History, 1916 - 3 v. ; láms. - State Geological and Natural History Survey. Bulletin . - State Geological and Natural History Survey. Bulletin . La bilbioteca tiene : Pte. 3 (Bulletin; 22) LCCN: 24733 Subjects--Topical Terms: Himenópteros--E.U.A. Dewey Class. No.: 595.7 / B7