00751nam2a22001937a 4500001001500000005001500015008004100030040001900071049001700090052001900107082001600126100004800142245011500190260006300305300003200368502005900400653007300459900002500532WDM000006139  20201021153139950516s1987    us a          000d  eng    a011001c0110010 lWM161422fDP02a665.772bS958d0 a665.7722191 a성원모,g成原模,d1955-0KAC20121573110aDevelopment, testing and application of a multi-well numerical coal seam degasification simulator/dWonmo sung  aUniversity Park, PA:bPennsylvania State university,c1987  axxii, 215 p.:bill.;c29 cm1 aThesis(Ph.D.) --bPennsylvania State University,d1987  aTESTINGaMULTIWELLaNUMERICALaCOALaSEAMaDEGASIFICATIONaSIMULATOR10aSung, Won-mo,d1955-