http://book.klll.cc/ebooks/author/51449.opds?sort_order=downloads 2025-11-18T21:54:13Z Books by American Chemical Society Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-18T21:54:13Z https://en.wikipedia.org/wiki/American_Chemical_Society See also: en.wikipedia 2025-11-18T21:54:13Z https://book.klll.cc/ebooks/61462.opds Standard methods for the examination of water and sewage American Public Health Association. Laboratory Section, American Chemical Society, and Association of Official Agricultural Chemists