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UC San Diego Library – Scripps Digital Collection
Report on the scientific results of the voyage of H.M.S. Challenger during the years 1873-76. Zoology - Vol. 3
- Author(s): Thomson, C Wyville
- Murray, John
- et al.
Zoology Volume 3.
Part IX. Report on the Echinoidea ...
By Alexander Agassiz
Part X. Report on the Pycnogonida ...
By P. P. C. Hoek