TY  - RPRT
TI  - Compilation of field methods used in geochemical prospecting by the U.S. Geological Survey
AU  - Hubert William Lakin
AU  - Frederick Norville Ward
AU  - Hy Almond
PY  - 1952
DO  - 10.3133/cir161
UR  - https://pubs.usgs.gov/publication/cir161
ID  - cir161
ER  -