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

by Harvey Washington Wiley

[208] Chemiker Zeitung, Band 18, S. 1320.

[209] Journal of the American Chemical Society, Vol. 17, p. 85.

[210] Chemical Division, U. S. Department of Agriculture, Bulletin No. 43, p. 26.

[211] Vid. op. cit. 25, Vol. 17, p. 46.

[212] Zeitschrift für angewandte Chemie, 1891, S. 281.

[213] Zeitschrift für analytische Chemie, Band 32, S. 184.

[214] Vid. op. cit. 25, Vol. 16, p. 364.

[215] Vid. op. cit. 25, Vol. 17, p. 463.

[216] Vid. op. et. loc. cit. supra.

[217] Chemiker Zeitung, 1890, S. 1246.