Note 49 — PHYSICAL EXAMINATION.
Reading edition
Hollis, F. S. Methods for the determination of color and the relation of the color to the character of the water: J. N. E. Water Works Assoc., Vol. 13, pp. 94–118, 1898.
Reading edition
Hollis, F. S. Methods for the determination of color and the relation of the color to the character of the water: J. N. E. Water Works Assoc., Vol. 13, pp. 94–118, 1898.