The effect of habitat sound properties on alarm calling behavior in two species of tree squirrels (Sciurus Nayaritensis and Sciurus Arizonensis / 
Edeen Donna Hobbs 
 - Ann Arbor, Mich. :  University Microfilms International,  1980 
 - 66 p. ;  22 cm. 
<br/><br/>Thesis (Ph. D.) - The University of Arizona, 1980 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Squirrels--Behavior<br/>Squirrels--Arizona--Habitat<br/>Squirrels--Habitat<br/>Animals--Habitations