TY - RPRT TI - Coalbed gas in Hungary; a preliminary report AU - E.R. Landis AU - T.J. Rohrbacher AU - C.E. Barker AU - Bela Fodor AU - Gizella Gombar PY - 2002 DO - 10.3133/ofr01473 UR - https://pubs.usgs.gov/publication/ofr01473 ID - ofr01473 ER -