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

by Harvey Washington Wiley

[65] Vid. op. cit. 52, p. 61.

[66] Vid. op. cit. 55, Vol. 18, p. 1153.

[67] Chemiker Zeitung, 1894, No. 88, p. 1934.

[68] Op. cit. supra, 1892, p. 1471.

[69] Vid. op. cit. 60, p. 721.

[70] Zeitschrift für analytische Chemie, Band 29, S. 408.

[71] Mitteilungen der deutschen Landwirtschafts Gesellschaft, 1890-’91, No. 11, S. 131.

[72] Zeitschrift für angewandte Chemie, 1888, S. 299.

[73] Vid. op. cit. 70, p. 409.

[74] Vid. op. cit. 72, 1890, p. 595.