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Perpetuation of essential records by microfilming
Description of methods and use; microstat camera equipment illustrated and described.
Perpetuation of essential records by microfilming
Description of methods and use; microstat camera equipment illustrated and described.
Perpetuation of essential records by microfilming
Water Works Sewerage
Jortberg, Jr., C.A. (author)
1943
4 pages
Article (Journal)
English
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