IL45726A0
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1974-11-29
Method and apparatus for the purification of water
ZA74752B
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1974-12-24
Electrolysis method and apparatus
ZA742286B
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1975-11-26
Mixing method and apparatus
CA1034265A
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1978-07-04
Wastewater treatment process and apparatus
GB1446272A
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1976-08-18
Collating method and apparatus
CA1032277A
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1978-05-30
Sewage treatment method and apparatus
CA944089A
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1974-03-19
Method and apparatus for treating sewage
CA1028431A
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1978-03-21
Sewage treatment process and apparatus
CS187380B2
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1979-01-31
Sewage treatment method and device for making the said method
IL45829A0
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1974-12-31
Methods and apparatus for treating wastewater
IL38574A0
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1972-03-28
Method and apparatus for chemically purifying sewage
ZA731972B
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1973-11-28
Method and apparatus for treating sewage
ZA726080B
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1973-05-30
Apparatus and method for treating sewage water
ZA735707B
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1974-09-25
Sewage treatment apparatus and method
AU475357B2
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1975-02-27
Sewage treatment apparatus and method
CA999988A
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1976-11-16
Sewage treatment method and apparatus
CA994929A
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1976-08-10
Sewage treatment apparatus and method
ZA742796B
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1975-05-28
Freeze-branding process and apparatus
CA972088A
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1975-07-29
Sewage treatment apparatus and method
CA991761A
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1976-06-22
Process and apparatus for treating sewage sludge
AU488263B2
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1976-04-15
Wastewater treatment process and apparatus
AU494933B2
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1975-12-18
Improved fluid treating apparatus and method
CA890100A
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1972-01-04
Sewage treatment process and apparatus
CA914812A
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1972-11-14
Method and apparatus for treating sewage
ZA738766B
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1975-03-26
Method and apparatus for the biological treatment of wastewater