1 Subjects: “... of specific sectors::KCVD Agricultural and rural economics...”

2 Subjects: “... Management and management techniques::KJMV Management of specific areas::KJMV5 Production and quality control...”

3 Subjects: “...site-specific nitrogen management...”

4 Subjects: “... Management and management techniques::KJMV Management of specific areas::KJMV6 Research and development...”

5 Subjects: “...site-specific K management...”

6 Subjects: “... of specific sectors::KCVG Environmental economics...”

7 Subjects: “... of specific sectors::KCVJ Health economics...”

8 Subjects: “... of specific sectors::KCVG Environmental economics...”

9 Subjects: “... of specific sectors::KCVG Environmental economics...”

10 Subjects: “...specific gravity...”

11 Subjects: “...site-specific nutrient management...”

12 Subjects: “...specific energy...”

13 Subjects: “...site-specific seeding...”

14 Subjects: “...job-specific...”