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Synopsis of the Families of Vertebrata. 
BY. PROF. -B D.: COPE. 
q This article, which was printed in the AMERICAN NATURALIST 
for October, 1889, has been issued in separate form by the 
publishers, for the use of lecturers, instructors and others who 
may have use for it, and will be sent by mail, postpaid, on 
receipt of 25 cents. 


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