Norman Lathrop Enterprises  
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Lathrop Report On Newspaper Indexes
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.

TURBIDIMETER

Build a turbidimeter, a scientific instrument used to measure the cloudiness of solutions (such as water).
POPULAR ELECTRONICS [2] Apr 1996 (v.13#4) pg. 77, 64