Limit by calendar year: 2011 All
| Gre_Num_2.pdf | 150 |
| 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 | |
| Gre_Num_2.pdf | 1 | 5 | 3 | 0 | 0 | 2 | 1 | 8 | 5 | 4 | 6 | 22 | 6 |
| History of industrial forestry in the South | 114 |
| United States of America | 58 |
| Korea | 28 |
| China | 7 |
| Canada | 5 |
| Japan | 2 |
| Russian Federation | 2 |
| Sweden | 2 |
| Brazil | 1 |
| Greece | 1 |
| New Zealand | 1 |
| Seoul | 28 |
| Washington | 23 |
| Mountain View | 10 |
| Beijing | 4 |
| 2 | |
| Anaheim | 2 |
| Athens | 2 |
| Columbus | 2 |
| Corvallis | 2 |
| Mississippi State | 2 |