Home › Authors › Valerie J. Kelly 👤 Valerie J. Kelly 3 books Books by Valerie J. Kelly Western pilot study Western pilot study 2006 Sources and transport of phosp Sources and transport of phosphorus and nitrogen during low-flow conditions in the Tualatin River, Oregon, 1991-93 1999 Dissolved oxygen in the Tualatin River, Oregon, during winter flow conditions, 1991 and 1992 1996