TY  - RPRT
TI  - The use of Vacutainer tubes for collection of soil samples for helium analysis
AU  - Margaret Hinkle
AU  - James E. Kilburn
PY  - 1979
DO  - 10.3133/ofr791441
UR  - https://pubs.usgs.gov/publication/ofr791441
ID  - ofr791441
ER  -