Search on: UPFLOW FILTERS 
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Descriptor English:   Upflow Filters 
Descriptor Spanish:   Filtros Ascendentes 
Descriptor Portuguese:   Filtros Ascendentes 
Tree Number:   SP4.006.062.493.774.425
SP4.021.202.133.709.645.441
See Related English:   Rapid Filtration
Upflow Filtration
 
Allowable Qualifiers English:  
adverse effects analysis
classification economics
ethics ethnology
history legislation & jurisprudence
methods prevention & control
policies statistics & numerical data
Record Number:   25205 

Occurrence in VHL: 		 

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