University of Minnesota Duluth. Office of SustainabilityMoser, Jaeger2020-05-152020-05-152019-12-03https://hdl.handle.net/11299/213660enOffice of SustainabilityUniversity of Minnesota DuluthUMD Ice Rink Makeover Eliminates Use of R-22, a Powerful Greenhouse Gas (2019-12-03)Newsletter