concept

The bacterial filtration of public water supplies / by Wolf Defries.

On the theory and practice of disinfection by heat / by Wolf Defries.

An improved steriliser / [Wolf Defries].

Improvements in disinfecting apparatus / [Geneste Herscher].

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Defries, Wolf

Works from the collections

The bacterial filtration of public water supplies / by Wolf Defries.

On the theory and practice of disinfection by heat / by Wolf Defries.

An improved steriliser / [Wolf Defries].

Improvements in disinfecting apparatus / [Geneste Herscher].