http://dewey.info/scheme/a14/ en
363.7 Environmental problems
363.72 Sanitation
363.7209173 Rural sanitation
http://dewey.info/scheme/a14/ vi
363.7 Vấn đề môi trường
363.72 Vệ sinh
363.7209173 Vệ sinh nông thôn
http://dewey.info/scheme/a14/ it
363.7 Problemi ambientali
363.72 Igiene pubblica
363.7209173 Igiene rurale
http://dewey.info/scheme/edition/e23/ en
363.7 Environmental problems
363.72 Sanitation
363.72091734 Rural sanitation 363.728 Wastes 363.729 Sanitation in specific environments
Dewey Decimal Classification
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