TY - RPRT TI - Computer program designed to draw a ternary diagram based on proportions of any three variables from oil-shale Fischer assay or saline-mineral data AU - George Van Trump AU - Janet K. Pitman PY - 1975 DO - 10.3133/ofr75524 UR - https://pubs.usgs.gov/publication/ofr75524 ID - ofr75524 ER -