. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. POINTS TO OBSERVE 367 P to CO CO » A OD C >i o p- o p o* o a 3 CO o o d CO 5' trt- £0 <rK O* P. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Weir, Wilbert Walter, 1882-. Philadelphia London, J. B. Lippincott company

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsoils, bookyear1920