WASTEWATER + WASTEWATER TREATMENT
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BTWASTE MANAGEMENT AND URBAN HYGIENE
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BTURBAN HYDRAULIC ENGINEERING (CIVIL ENGINEERING)
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BTENVIRONMENTAL ENGINEERING
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UDC628.3
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Descriptor GERABWASSER + ABWASSERBEHANDLUNG
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Descriptor ENGWASTEWATER + WASTEWATER TREATMENT
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Descriptor FREEAUX USÉES + TRAITEMENT DES EAUX USÉES
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Variant GERABWASSERTECHNIK
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Variant GERSCHMUTZWASSER
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Variant GERSCHMUTZWASSERBEHANDLUNG
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Variant GERABWASSERREINIGUNG
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Variant GERABWASSER
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Variant GERABWASSERBEHANDLUNG
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Variant GERREINIGUNG/ABWASSEREINIGUNG
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Variant GERTECHNIK/ABWASSERTECHNIK
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Variant GERBEHANDLUNG/SCHMUTZWASSER-, ABWASSERBEHANDLUNG
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Variant GERWASSER/SCHMUTZWASSER, ABWASSER
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Variant ENGWASTEWATER
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Variant ENGWASTE WATER
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Variant ENGWASTE WATER TREATMENT
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Variant ENGWASTEWATER TREATMENT
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Variant ENGWASTEWATER ENGINEERING
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Variant ENGWASTE WATER ENGINEERING
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Variant ENGTREATMENT/WASTEWATER TREATMENT
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Variant ENGENGINEERING/WASTEWATER ENGINEERING
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Variant FRETRAITEMENT DES EAUX USÉES
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Variant FREEAUX USÉES/TRAITEMENT DES EAUX USÉES
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NTUNTREATED WASTEWATER DISPOSAL IN NATURAL ENVIRONMENTS
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NTWASTEWATER ACCORDING TO GENERATOR OR SOURCE
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NTWASTEWATER TREATMENT SYSTEMS + WASTEWATER TREATMENT STAGES
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NTWASTEWATER CONTROL (PUBLIC ADMINISTRATION)
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NTCOMPUTER APPLICATIONS IN ENVIRONMENTAL ENGINEERING
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NTHISTORY OF WASTEWATER TREATMENT
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NTSEWAGE WORKS (WASTEWATER TREATMENT)
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NTWASTEWATER UTILIZATION IN AGRICULTURE + SEWAGE FIELDS
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NTQUANTITY, COMPOSITION, PROPERTIES AND ANALYSIS OF WASTEWATER
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NTRESIDUAL MATERIALS (WASTEWATER TREATMENT)
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NTSEEPAGE WATER TREATMENT (WASTE DISPOSAL SITES)
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RTWASTEWATER TAXES
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RTLIQUID WASTES + MUDDY WASTES (WASTE MANAGEMENT)
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RTHYGIENE OF WATER, PROTECTION OF WATER QUALITY, CONSERVATION OF WATER RESOURCES (ENVIRONMENTAL PROTECTION)