Checklist of birds of Puerto Rico and the Virgin Islands 
[by] N.F. Leopold. 
 - Río Piedras, P.R.  University of Puerto Rico...  1963. 
 - 119 p.  illus., plate, tables. 
 - Bulletin  no. 168 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds--Puerto Rico.<br/>Birds--Virgin Islands of the United States.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Birds.<br/>Virgin Islands--Birds.