Front matter
Reading edition
Transcriber’s Note:
The cover image was created by the transcriber and is placed in the public domain.
STANDARD METHODS FOR THE EXAMINATION OF WATER AND SEWAGE
FOURTH EDITION
Revised by committees of the American Public Health Association, American Chemical Society, and referees of the Association of Official Agricultural Chemists
AMERICAN PUBLIC HEALTH ASSOCIATION
169 Massachusetts Avenue
BOSTON
1920
Copyright, 1917 and 1920
By the American Public Health Association
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