Originally published as: Nitrogen and phosphorus loading from drained wetlands adjacent to Upper Klamath and Agency Lakes, Oregon (Portland, Ore. : U.S. Dept. of the Interior, U.S. Geological Survey : Denver, CO : Branch of Information Services [distributor], 1997) https://alliance-primo.hosted.exlibrisgroup.com/primo-explore/search?tab=default&search_scope=oit_alma&vid=OIT&institution=OIT&mode=basic&query=any,contains,38072485