How we defend ourselves from our foes Fraser-Harris, David Fraser, 1867-1937 creator text book Canada? s.n 1914? 1914
print
ENG Cover title. "Reprinted from the Popular Science Monthly, July, 1914." Bacteria FC 02 0203 no. 76176 AEU 616/.014 CIHM/ICMH microfiche series, no. 76176 https://www.biodiversitylibrary.org/bibliography/62874 0665761767 53666421 10.5962/bhl.title.62874 CaOOCIHM