http://www.gutenberg.org/ebooks/author/55064.opds
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Books by Hazen, Allen (sorted by popularity)
Free eBooks since 1971.
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https://en.wikipedia.org/wiki/Allen_Hazen
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2024-12-23T01:56:58Z
https://sendtokindle.compellingsciencefiction.com/ebooks/69025.opds
The filtration of public water-supplies
Allen Hazen