TY - RPRT TI - Geochemical map showing the distribution and abundance of bismuth, antimony, and silver in the nonmagnetic heavy-mineral concentrate samples in the Big Delta quadrangle, Alaska AU - Thomas D. Hessin AU - E.F. Cooley AU - Cynthia Dusel-Bacon PY - 1978 DO - 10.3133/ofr78529f UR - https://pubs.usgs.gov/publication/ofr78529F ID - ofr78529F ER -