Variation in genetic structure among populations of the caddisfly Helicopsyche borealis from three streams in northern California, U.S.A.
https://stroudcenter.org/wp-content/uploads/publication-e1554320152730.jpg 350 210 Stroud Water Research Center Stroud Water Research Center https://stroudcenter.org/wp-content/uploads/publication-e1554320152730.jpgJackson, J.K., and V.H. Resh. 1992. Freshwater Biology 27:29–42.