CROWSON, P. (1998). Inside mining - The economics of the supply and demand of minerals and methods - Philip Crowson. Mining Journal Books Limited.
Chicago-viite (17. p.)CROWSON, Philip. Inside Mining - The Economics of the Supply and Demand of Minerals and Methods - Philip Crowson. Mining Journal Books Limited, 1998.
MLA-viite (8. p.)CROWSON, Philip. Inside Mining - The Economics of the Supply and Demand of Minerals and Methods - Philip Crowson. Mining Journal Books Limited, 1998.
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