The bacteria of river waters
By: By Dr. John S. Billings. (Presenting a paper on the bacteria of the Schuylkill River by Dr. J.H. Wright.)
Published: 1895
Language: eng
Subjects: Water Supply; Rivers; Analysis; Bacteria; Classification; Water-supply
Notes: In National academy of sciences, Washington, D. C. Memoirs. Washington, 1895. 30 x 24 cm. v. 7 (3d memoir) p. 419-484. illus., 5 col. pl., tables, v fold. diagrs.

"Report on the results of an examination of the water supply of Philadelphia. By Dr. J.H. Wright": p. 422-474.