A series of diagrams which show graphically the monthly averages and the variation of the more important factors which are taken into consideration in the grading of commercial corn ... :
based on the analyses of samples representing the receipts at terminal markets and shipments from country elevators covering a period mainly from October 1909, to May 1913, inclusive /
Approved: W.A. Taylor, Chief of Bureau. October 9, 1913.
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Item Link | Original Source |
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Full view | Pennsylvania State University |