http://dewey.info/scheme/a14/ en
630 Agriculture and related technologies
630.1 Philosophy and theory
http://dewey.info/scheme/a14/ vi
630 Nông nghiệp và các công nghệ liên quan
630.1 Triết học và lý thuyết
http://dewey.info/scheme/a14/ it
630 Agricoltura e tecnologie connesse
630.1 Filosofia e teoria
Dewey Decimal Classification
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