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_ FIRST SERIES No. 23)” DECEMBER, 1918 
__-UNIVERSITY OF IOWA 
< STUDIES 
_ STUDIES IN NATURAL 
HISTORY, 2 
hes "4 ; 
Continuation of the Bulletin from the Laboratories of Natural | 
Lo - History of the State University of Iowa 
VOLUME VI |  NUMBERQ_ 
A NEST STUDY OF THE MARYLAND 
YELLOW-THROAT = 
by 
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Wr Bad, 
NELLE E. SHAVER | 53 | 
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_ PUBLISHED BY THE UNIVERSITY, IOWA CITY 
--Issued monthly throughout the year. Entered at the post office at Iowa City, 
'  Jowa, as second class matter. Acceptance for mailing at special rate/of postage 
. provided for in section 1103, Act of October 3, 1917, authorized on July 3, 1918 
