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View Procedure for making draft tests of plows, directions for making square yard harvests of legumes, and description and use of soil sampling tube By United States. Bureau of Agricultural Engineering 
Procedure for making draft tests of plows, directions for making square yard harvests of legumes, and description and use of soil sampling tube
By United States. Bureau of Agricultural Engineering
View O. A. C. Review Volume 32 Issue 4, December 1919 By Ontario Agricultural College
O. A. C. Review Volume 32 Issue 4, December 1919
O. A. C. Review Volume 32 Issue 4, December 1919
By Ontario Agricultural College
View O. A. C. Review Volume 45 Issue 4, January 1933 By Ontario Agricultural College
O. A. C. Review Volume 45 Issue 4, January 1933
O. A. C. Review Volume 45 Issue 4, January 1933
By Ontario Agricultural College