TY - RPRT TI - Geochemical map showing the distribution and abundance of cobalt, chromium, and nickel in the oxide residue of stream-sediment samples in the Big Delta quadrangle, Alaska AU - Thomas D. Hessin AU - E.F. Cooley AU - R. T. Hopkins AU - C. M. McDougal AU - D.E. Detra PY - 1978 DO - 10.3133/ofr78529l UR - https://pubs.usgs.gov/publication/ofr78529L ID - ofr78529L ER -