Straw filters for sewage purification.
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| Title: | Straw filters for sewage purification. |
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| Authors: | Richards, E. H., Weekes, M. G. |
| Source: | Engineering & Contracting.; November 30 1921, Vol. 56, p500-500, 1p |
| Database: | Applied Science & Technology Source |
| ISSN: | 03617564 |
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