TY - RPRT TI - Finite-difference model of two-dimensional, single, and two-phase heat transport in a porous medium - Version I AU - Charles R. Faust AU - James W. Mercer PY - 1977 DO - 10.3133/ofr77234 UR - https://pubs.usgs.gov/publication/ofr77234 ID - ofr77234 ER -