TY - RPRT TI - The effect of entrapped nonaqueous phase liquids on tracer transport in heterogeneous porous media: Laboratory experiments at the intermediate scale AU - Gilbert R. Barth AU - T.H. Illangasekare AU - H. Rajaram PY - 2003 DO - 10.1016/s0169-7722(03)00066-4 UR - https://pubs.usgs.gov/publication/70025248 ID - 70025248 ER -