http://dewey.info/scheme/a14/ en
634.9 Forestry
634.9092 Foresters
http://dewey.info/scheme/a14/ vi
634.9 Lâm nghiệp
634.9092 Nhân viên lâm nghiệp
http://dewey.info/scheme/edition/e23/ en
634.9 Forestry
634.9092 Foresters
Dewey Decimal Classification
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