Note 28 — Chapter VI · THE FILM WATER.
Reading edition
The moisture content and physical condition of soils, by Frank K. Cameron and Francis E. Gallagher, Bull. No. 50, Bureau of Soils, U. S. Dept. of Agriculture, 1908. See also Über physikalische Bodenuntersuchung, von H. Rodewald, Schriften Naturwiss. Vereins Schleswig-Holstein, 14, 397-399, (1909).