Calculation of coal resources using ARC/INFO and EarthVision [microform] : methodology for the National Coal Resource Assessment / by Laura N.R. Roberts and Laura R.H. Biewick Paper version (Open-file report ; 99-5)
Calculation of coal resources using ARC/INFO and EarthVision [microform] : methodology for the National Coal Resource Assessment / by Laura N.R. Roberts and Laura R.H. Biewick