Peterson, Roger A.2016-01-122016-01-121983[author. date. title]. St. Paul, MN: University of Minnesota Extension Service. [series]https://hdl.handle.net/11299/176189This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.enDial-U-Tip Script: Air-to-Air Heat ExchangersOther