| Views | |
| Solar energy for preheating ventilating air | 353 |
| November 2012 | December 2012 | January 2013 | February 2013 | March 2013 | April 2013 | May 2013 | |
| Solar energy for preheating ventilating air | 9 | 18 | 18 | 20 | 14 | 12 | 6 |
| Views | |
| Swine77pg48-55.pdf | 355 |
| Views | |
| United States of America | 182 |
| China | 83 |
| Russian Federation | 6 |
| Germany | 5 |
| India | 5 |
| Japan | 5 |
| Ukraine | 3 |
| Canada | 2 |
| Korea | 2 |
| Brazil | 1 |
| Views | |
| Beijing | 62 |
| Manhattan | 43 |
| Washington | 13 |
| Needham Heights | 7 |
| Dallas | 3 |
| Gunzenhausen | 3 |
| Toledo | 3 |
| Brunswick | 2 |
| Moscow | 2 |
| New Delhi | 2 |