Henry B.H.B.WardHenry B.H.B., On the Structure and Classification of North American Parasitic Worms, „The Journal of Parasitology”, 4 (1), 1917, s. 1–12, DOI: 10.2307/3271103, JSTOR: 3271103.
jstor.org
Henry B.H.B.WardHenry B.H.B., On the Structure and Classification of North American Parasitic Worms, „The Journal of Parasitology”, 4 (1), 1917, s. 1–12, DOI: 10.2307/3271103, JSTOR: 3271103.