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12. Utilization of fats: a theoretical and technical treatise on the composition, extraction, analysis and applications of fats
13. Behold our land
14. Foods: production, marketing, consumption
15. Research methods on farm use of tractors
16. Farm machinery
17. The soybean industry
18. An introduction to soil science
19. Bio-dynamic farming and gardening: soil fertility renewal and preservation
20. Forest pathology
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