Pitman, R. L., Jehl, J. R. <br/><br/>
Geographic variation and reassessment of species limits in the ?masked? boobies of the eastern Pacific ocean.     
Pitman, R. L., Jehl, J. R. 
 -  1998 
 - 155-170.    Article 
<br/><br/><br/>English 
<br/><br/><label>Subjects--Index Terms: </label>Geographic variation and reassessment of species limits in the ?masked? boobies of the eastern Pacific ocean.   
<br/><br/><label>Dewey Class. No.: </label>598.43  598.43