Note 13 — CHEMICAL EXAMINATION.
Reading edition
Drown, T. M., and Martin, Henry. Determination of organic nitrogen in natural waters by the Kjeldahl method: Tech. Quart., Vol. 2, No. 3; Chem. News, Vol. 59, pp. 272–6, 1889.
Reading edition
Drown, T. M., and Martin, Henry. Determination of organic nitrogen in natural waters by the Kjeldahl method: Tech. Quart., Vol. 2, No. 3; Chem. News, Vol. 59, pp. 272–6, 1889.