The chaetognatha
Subtitle: their anatomy, systematics, and developmental history.
By: A monograph by Oscar Hertwig.
Contributors: Hertwig, Oscar, 1849-1922.
Publisher: Distributed by Library, University of California, Scripps Institution of Oceanography
Published: 1959
Place of publication: [La Jolla, Calif
Language: eng
Number of pages: 88
Subjects: Chaetognatha.
Notes: Translated from the German by Susan M. Egan and Paul V. Sund.

Added title page: Studies on germ layer theory, by O. Hertwig and R. Hertwig.  Booklet 2.  The Chaetognatha, their anatomy, systematics, and developmental history.  Jena, G. Fisher, 1880.

"Literature cited": leaves 83-86.