Nearctic pine tip moths of the genus Rhyacionia, biosystematic review : Lepidoptera--Tortricidae, Olethreutinae /

by Powell, Jerry A., Miller, William E., 1930-
Washington, D.C. : Forest Service, U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1978