A new ASTM International standard is aiming to bring greater consistency to the way PFAS are sampled across environmental ...
Nico U. F. Dosenbach is in the Department of Neurology, Washington University School of Medicine, St. Louis, Missouri 63110, USA; and in the Mallinckrodt Institute of Radiology, Washington University ...
Cochran (1977) outlines eleven steps in the planning of a survey. Good sampling methods must exist in the environment of all of these steps. These steps are (1) a statement of the survey objectives, ...
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