Environmental sanitation abstracts.

Environmental sanitation abstracts.

Manylion Llyfryddiaeth
Awdur Corfforaethol: Environmental Sanitation Information Center (Bangkok, Thailand)
Fformat: Continuing Resource
Iaith:English
Cyhoeddwyd: Bangkok, Thailand Environmental Sanitation Information Center Asian Institute of Technology
Pynciau:
Water > Purification > Abstracts > Periodicals.
Sewage > Purification > Abstracts > Periodicals.
Sewage > Purification.