S. Ryker

发表

Nitrate concentrations in ground water of the central Columbia Plateau

Joseph L. Jones, S. Ryker, 1998 .

USGS critical minerals review

R. Seal, J. Hammarstrom, W. Day, 2019 .

Defining surfaces for skewed, highly variable data

D. Helsel, S. Ryker, 2002 .

Combining Occurrence and Toxicity Information to Identify Priorities for Drinking‐Water Mixture Research

M. Small, S. Ryker, 2008, Risk analysis : an official publication of the Society for Risk Analysis.

Pesticides in Public Supply Wells of Washington State

A. K. Williamson, S. Ryker, 1996 .

Water quality in the central Columbia Plateau, Washington and Idaho, 1992-95

R. J. Wagner, A. K. Williamson, J. C. Ebbert, 1998 .

Agricultural Pesticide Applications and Observed Concentrations in Surface Waters from Four Drainage Basins in the Central Columbia Plateau, Washington and Idaho, 1993-94

R. J. Wagner, J. C. Ebbert, S. Ryker, 1995 .

Pesticides in Public Supply Wells of the Central Columbia Plateau

A. K. Williamson, S. Ryker, 1996 .

The Value of Earth Observations: Methods and Findings on the Value of Landsat Imagery

T. Newman, L. Richardson, H. Miller, 2016 .

Arsenic in ground water used for drinking water in the United States

S. Ryker, 2003 .