TY  - RPRT
TI  - Programs in Hewlett-Packard BASIC for storing, retrieving, and plotting rare-earth element data for geochemical studies, using HP-9831/9872 desk top computers and plotters
AU  - K.R. Ludwig
AU  - John S. Stuckless
PY  - 1979
DO  - 10.3133/ofr79949
UR  - https://pubs.usgs.gov/publication/ofr79949
ID  - ofr79949
ER  -