APA
United States D. o. A., .Trade offs Between farm income and Selected Environmental Indicators : A Case study of soil Constraints. Technical Bulletin No.1550. : .
Chicago
United States Department of Agriculture, .Trade offs Between farm income and Selected Environmental Indicators : A Case study of soil Constraints. Technical Bulletin No.1550. : .
Harvard
United States D. o. A., .Trade offs Between farm income and Selected Environmental Indicators : A Case study of soil Constraints. Technical Bulletin No.1550. : .
MLA
United States Department of Agriculture, .: . .