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S. A. Black has written:

'A comparison of catch basin inlet grate efficiencies' -- subject(s): Design and construction, Storm sewers

'Phosphorus removal by lime addition to a conventional activated sludge plant' -- subject(s): Activated sludge process, Lime, Phosphorus content, Purification, Sewage, Water

'A self-contained experimental diver heater' -- subject(s): Equipment and supplies, Scuba diving, Electrochemical apparatus, Skin diving

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11y ago

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