Barker, F. D. (1911). The trematode genus Opisthorchis R. Blanchard, 1895. Studies from the Zoological Laboratory. The University of Nebraska. (103): 513–561. Title pages says 'Extrait de Archives de Parasitologie, Tome XIV, pages 513–561. US catalogue says' 'This fascicle was never issued, according to a letter from Prof. E. Brumpt, Paris, Mar. 4, 1932'.
The trematode genus Opisthorchis R. Blanchard, 1895
Studies from the Zoological Laboratory. The University of Nebraska
(103): 513–561. Title pages says 'Extrait de Archives de Parasitologie, Tome XIV, pages 513–561. US catalogue says' 'This fascicle was never issued, according to a letter from Prof. E. Brumpt, Paris, Mar. 4, 1932'