Principles and practice of agricultural analysis. Volume 2 (of 3), Fertilizers

by Harvey Washington Wiley

[115] In the work of T. S. Gladding only fifty cubic centimeters of citrate were used.

[116] Zeitschrift für analytische Chemie, Band 10, S. 133.

[117] Lehrbuch der Düngerfabrication.

[118] Bulletin 54, Purdue Agricultural Experiment Station, p. 4.

[119] Vid. op. cit. supra, p. 7.

[120] Runyan and Wiley; Paper presented to Washington Section of the American Chemical Society, April 11, 1895.

[121] Bulletin 38, Chemical Division, U. S. Department of Agriculture, p. 16.

[122] Chemiker Zeitung, 1895, S. 553.

[123] Die Käuflichen Dungermittel Stoffe, dritte Auflage, 1889.

[124] Wyatt, Phosphates of America, p. 128.