%0 Journal Article %T Estimation of Distributional Parameters for Censored Trace Level Water Quality Data: 1. Estimation Techniques %A Gilliom, Robert J. %A Helsel, Dennis R. %J Water Resources Research %V 22 %N 2 %P 135-146 %@ 0043-1397 %D 1986-02-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve