- Physical Description: 1 online resource (vi, 28 pages) : illustrations.
- Edition: Version 2.0, revised: February 2021.
- Publisher: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2021.
"Chapter 6.4 of Section A, National Field Manual for the Collection of Water-Quality Data Book 9, Handbooks for Water-Resources Investigations."
"First release: April 1998, online as Techniques of Water-Resources Investigations (TWRI), book 9, chapter A6.4, version 1.0 revised: July 2003, online as TWRI 9-A6.4, version 1.2 revised: January 2006, online as TWRI 9-A6.4, version 1.3 revised: October 2008, online as TWRI 9-A6.4, version 2.0 revised: February 2021, online as Techniques and Methods, book 9, chapter A6"--Title page verso.
|Bibliography, etc. Note:||
Includes bibliographical references (page 28).
|Source of Description Note:||
Description based on online resource; title from PDF title page (USGS, viewed Aug. 12, 2021).
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|Subject:||Groundwater > Quality.
Hydrogen-ion concentration > Measurement.