| Views | |
| Factors controlling a quarry's profit | 266 |
| December 2012 | January 2013 | February 2013 | March 2013 | April 2013 | May 2013 | June 2013 | |
| Factors controlling a quarry's profit | 11 | 12 | 18 | 13 | 18 | 16 | 6 |
| Views | |
| INT-J-MIN-REC-ENV-2011-25-3-248-dvoracek.pdf | 262 |
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| United States of America | 91 |
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