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Filter: Subject of machinery
Filter: Subject of sanitation
| Date: | 02 22 1950 |
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| Description: | An example of a pilot plant to remove phosphorus from sewage effluent by engineering professors William L. Lea and Gerard A. Rohlich. |
| Date: | 03 23 1954 |
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| Description: | A food machine from Bridge (Food) Machine Company is demonstrated during the Wisconsin Canners Association Production and Technology Conference regarding p... |
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