| Views | |
| Alum Recovery from Water Treatment Sludges | 67 |
| tammikuu 2013 | helmikuu 2013 | maaliskuu 2013 | huhtikuu 2013 | toukokuu 2013 | |
| Alum Recovery from Water Treatment Sludges | 16 | 18 | 12 | 11 | 10 |
| Views | |
| United States of America | 31 |
| Canada | 21 |
| China | 13 |
| Egypt | 1 |
| Russian Federation | 1 |
| Views | |
| Toronto | 21 |
| Beijing | 10 |
| Redwood City | 10 |
| Sayreville | 6 |
| Cairo | 1 |
| Davis | 1 |
| Hebei | 1 |