Studies on the phenoldisulphonic acid method for determining nitrates in soils Lipman, C. B. (Charles Bernard), 1883-1944 creator Sharp, Leslie Theodore, 1888- joint author. contributor text book Berkeley University of California press [1912] 1912
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ENG Analysis Nitrates Phenol sulphonic acid Soils S593 .L6 University of California publications in agricultural sciences, v. 1, no. 2 [from old catalog] https://www.biodiversitylibrary.org/bibliography/43234 12033593 10.5962/bhl.title.43234 DLC