Matthias Hessling books & textbook
Coal Prospects in Eastern Europe
Gordon Couch Matthias Hessling Anna-Karin Hjalmarsson Eric Jamieson Tim Jones
IEA Coal Research /1990T Paperback / 117 Pages
Mine productivity
IEA Coal Research /1991-01-01 Paperback / 103 Pages
isbn-10: 9290291877 / isbn-13: 9789290291879
