The Philippine journal of science . Fig. 2. Fractions of a soil approxinnatino an ideal II. Cox AND Arguelles : Soils of Luzon.] [Phil. Journ. Scl, IX, A, No. 1. Pjjj5^^?=:j*^
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1906