Story, Jim Maynard2015-05-122015-05-121976https://scholarworks.montana.edu/handle/1/6176enWeeds--Biological controlFruit-fliesSpotted knapweedA study of Urophora affinis (Diptera : Tephritidae) released on spotted knapweed in Western MontanaThesisCopyright 1976 by Jim Maynard Story