Malan, D.F.. (1391). Pillar Design in the Hard Rock Mines of South Africa. , 46(2), 163-191. doi: 10.22059/ijmge.2012.51326
D.F. Malan. "Pillar Design in the Hard Rock Mines of South Africa". , 46, 2, 1391, 163-191. doi: 10.22059/ijmge.2012.51326
Malan, D.F.. (1391). 'Pillar Design in the Hard Rock Mines of South Africa', , 46(2), pp. 163-191. doi: 10.22059/ijmge.2012.51326
Malan, D.F.. Pillar Design in the Hard Rock Mines of South Africa. , 1391; 46(2): 163-191. doi: 10.22059/ijmge.2012.51326


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