Limit by calendar year: 2011 All
| TUALATIN-13_ocr.pdf | 120 |
| May 2011 | June 2011 | July 2011 | August 2011 | September 2011 | October 2011 | November 2011 | December 2011 | January 2012 | February 2012 | March 2012 | April 2012 | May 2012 | |
| TUALATIN-13_ocr.pdf | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 23 | 30 | 19 |
| Mass balance analysis of suspended solids in the Tualatin River | 218 |
| United States of America | 77 |
| China | 35 |
| Korea | 22 |
| Canada | 13 |
| United Kingdom | 9 |
| Switzerland | 8 |
| Japan | 7 |
| Netherlands | 7 |
| Sweden | 7 |
| India | 6 |
| Shenzhen | 21 |
| Seoul | 20 |
| 13 | |
| Beijing | 10 |
| Corvallis | 8 |
| Saint Gallen | 8 |
| Santa Clara | 7 |
| Mountain View | 6 |
| Delft | 5 |
| Laval | 5 |