A monograph of the gymnoblastic or tubularian hydroids /
By George James Allman.

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Item Link Original Source
Full view   pt, 1 Pennsylvania State University
Full view   c.1 v.2 University of Chicago
Full view   pt, 2 Pennsylvania State University
Full view   v.31 (FOLIO)(1871-1872) University of Illinois at Urbana-Champaign