Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Protozoology. A Manual for Medical Men: By John Gordon Thomson, MA, MD, Ch. B., and Andrew Robertson, MB, Ch. B. Royal Octavo, Pp. I–XIII. 1–376. Illustrated. 1929. Wm. Wood and Company, New York