TY  - RPRT
TI  - User's Guide to Handlens - A Computer Program that Calculates the Chemistry of Minerals in Mixtures
AU  - D. D. Eberl
PY  - 2008
DO  - 10.3133/ofr20081244
UR  - https://pubs.usgs.gov/publication/ofr20081244
ID  - ofr20081244
ER  -