TY - RPRT TI - Geochemical map showing the distribution and abundance of copper, lead, and zinc in the minus 80 mesh stream-sediment in the Big Delta quadrangle, Alaska AU - Thomas D. Hessin AU - R. M. O’Leary AU - J. D. Hoffman AU - D.E. Detra PY - 1978 DO - 10.3133/ofr78529i UR - https://pubs.usgs.gov/publication/ofr78529I ID - ofr78529I ER -