TY  - RPRT
TI  - Tritium rainout over the United States in 1962 and 1963
AU  - G.L. Stewart
AU  - C.M. Hoffman
PY  - 1966
DO  - 10.3133/cir520
UR  - https://pubs.usgs.gov/publication/cir520
ID  - cir520
ER  -