TY - RPRT TI - Maps showing interpretation, using R-mode factor analysis, of trace-element abundances in heavy-mineral concentrate samples, Delta 1° x 2° quadrangle, Utah AU - David R. Zimbelman PY - 1994 DO - 10.3133/mf2081g UR - https://pubs.usgs.gov/publication/mf2081G ID - mf2081G ER -