TY - RPRT TI - Diffusion and consumption of methane in an unsaturated zone in north-central Illinois, U.S.A. AU - Robert G. Striegl AU - A. L. Ishii PY - 1989 DO - 10.1016/0022-1694(89)90256-4 UR - https://pubs.usgs.gov/publication/70016145 ID - 70016145 ER -