title: [Improvement of natural resources and its hygienic importance].
authors.forename: S A
authors.initials: SA
authors.lastname: GUREVICH
mesh_terms: D003247:Conservation of Natural Resources; D006801:Humans; D006920:Hygiene; D012499:Sanitation
keywords: HYGIENE AND SANITATION
vernacular_title: Belikii plan preobrazovaniya prirody i ego higienicheskoe znachenie.