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- Agricultural education--Periodicals (1)
- Agriculture--Statistics--Periodicals (1)
- Animal industry--Periodicals (1)
- Animal products--Periodicals (1)
- Community development--Study and teaching--Periodicals (1)
- Education, Rural--Periodicals (1)
- Environmental protection (1)
- Fertilizer industry--Statistics--Periodicals (1)
- Food--Preservation--Periodicals (1)
- Grain trade--Statistics (1)
- Home economics--Equipment and supplies--Periodicals (1)
- Marine pollution (1)
- no value (5)