Durán Rodríguez, Raúl
Coal zones of Colombia - Houston, Texas Circum-Pacific Council for Energy and Mineral Resources 1990 - pp. 139-150 maps., tbls. - Earth Science Series .
CARBON
GEOLOGIA DEL CARBON
RESERVAS DE CARBON
COLOMBIA
553.042(238.1)/E75|8
Coal zones of Colombia - Houston, Texas Circum-Pacific Council for Energy and Mineral Resources 1990 - pp. 139-150 maps., tbls. - Earth Science Series .
CARBON
GEOLOGIA DEL CARBON
RESERVAS DE CARBON
COLOMBIA
553.042(238.1)/E75|8