TY - RPRT TI - Distribution and abundance of copper, determined by spectrographic analysis in the minus-80-mesh fraction of stream sediments, Petersburg area, southeast Alaska AU - John B. Cathrall AU - G.W. Day AU - J. D. Hoffman AU - S.K. McDanal PY - 1983 DO - 10.3133/ofr83420b UR - https://pubs.usgs.gov/publication/ofr83420B ID - ofr83420B ER -