Poulsen, Holger, <br/><br/>
A study of incubation responses and some other behaviour patterns in birds 
by Holger Poulsen. 
 - Kobenhavn  Bianco Lunos Bogtrykkeri  1953. 
 - 139 pages :    ill. ; 23 cm. 
<br/><br/> Reprinted from'Videnskabelige meddelelser fra Dansk naturhistorisk forening.' v. 115. 
<br/><br/>p. 124-131. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds--Behavior