Heinroth, Oskar <br/><br/>
Birds / 
by Oskar Heinroth and Katharina Heinroth 
 - Ann Arbor :  University of Michigan,  1958 
 - 181 p. :  ill. (some col.);  21 cm. 
<br/><br/><label>LCCN: </label>58-062521 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds--Popular works