Abstracts of patents on wastewater treatment processes and equipment
By: by Edward A. De La Rue.
Edition: European edition.
Publisher: Ovum Ltd.
Published: 1974
Place of publication: London
Language: eng
Number of pages: 239
Subjects: Wastewater -- Treatment -- Patents -- Abstracts.; Wastewater -- Purification -- Patents -- Abstracts.; Sewage sludge -- Treatment.; Sewage sludge -- Disposal.; Filters and filtration -- Methods.
Notes: Dated February 1974.

First published by R. E. De La Due Associates, Santa Clara, California, 1973.