TY - RPRT TI - Middle Triassic molluscan fossils of biostratigraphic significance from the Humboldt Range, northwestern Nevada AU - Norman J. Silberling AU - K. M. Nichols PY - 1982 DO - 10.3133/pp1207 UR - https://pubs.usgs.gov/publication/pp1207 ID - pp1207 ER -