@book{justhis2289,
           title = {Manuel pratique de droit minier belge au point de vue administratif},
          author = {Paul Duchaine},
         address = {Bruxelles},
       publisher = {Larcier},
            year = {1942},
        keywords = {minier	mining	mijnbouw economisch economic {\'e}conomique        

},
             url = {http://www.just-his.be/eprints/2289/}
}