Workshop: duct cleaning.
![](https://www.aivc.org/sites/default/files/default_images/default_image_5.png)
Year:
1993
Bibliographic info:
ASHRAE IAQ 93 Conference, Operating and Maintaining Buildings for Health, Comfort, and Productivity) Philadelphia, Pennsylvania, November 1993, Teichman:K:Y., Editor, 143, 144. ""ISBN no :1 883413 13 3.