TY - RPRT TI - Geochemical map showing the distribution and abundance of cobalt, chromium, and nickel in minus 80 mesh stream-sediment in the Big Delta quadrangle, Alaska AU - Thomas D. Hessin AU - D. F. Siems AU - Gordon W. Day PY - 1978 DO - 10.3133/ofr78529j UR - https://pubs.usgs.gov/publication/ofr78529J ID - ofr78529J ER -