Note 2 — CHEMICAL EXAMINATION.
Reading edition
Bartow, Edward, and Rodgers, J. S. Determination of nitrates by reduction with aluminium: Am. J. Public Hygiene, new ser., Vol. 5, pp. 536–44, 1909; also Illinois Univ. Bull., Vol. 7, No. 2 (Water Survey Ser. No. 7), pp. 14–27, 1909.