TY  - RPRT
TI  - A field method for the determination of calcium and magnesium in limestone and dolomite
AU  - Leonard Shapiro
AU  - Walter Wallace Brannock
PY  - 1957
DO  - 10.3133/ofr5799
UR  - https://pubs.usgs.gov/publication/ofr5799
ID  - ofr5799
ER  -