The life cycle of Echinostoma revolutum (Froelich) ... Johnson, John Christopher. creator text book [1919] 1919
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ENG Published also as University of California publications in zoology. v. 19, no. 11. Thesis (Ph. D.)--Univ. of California, Berkeley, Dec. 1919. Echinostoma revolutum https://www.biodiversitylibrary.org/bibliography/17842 18178820 10.5962/bhl.title.17842