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Synopsis of the Families of Vertebrata. 
BY PROF. E. D. COPE. 
This article, which was printed in the AMERICAN NATURALIST q 
for October, 1889, has been issued in separate form by the | 
publishers, for the use of lecturers, instructors and others who ~ 
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N. E. Cor, Seventh and Filbert Sts., Phila. d 
a iaae e 
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