TY  - RPRT
TI  - Radio-tracer techniques for the study of flow in saturated porous materials
AU  - H.E. Skibitzke
AU  - H. T. Chapman
AU  - G.M. Robinson
AU  - Richard A. McCullough
PY  - 1961
DO  - 10.1016/0020-708x(61)90006-0
UR  - https://pubs.usgs.gov/publication/70009802
ID  - 70009802
ER  -