MacPhail, Donald <br/><br/>
Regional setting 

 - Publication, 74 .
<br/><br/> <Donation Engel> 
<br/><br/>bibliogr. p. 53 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Région<br/>Zone aride<br/>Sol<br/>Végétation
<br/><br/><label>Subjects--Index Terms: </label>Etats Unis