Santa Catalina Mountains  : Field trip No.4 

 - Tucson, Arizona :  Committee on Arid Lands,  (s.a.) 
 - 35 h.  : ilus 
<br/><br/><label>LCCN: </label>25830 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arizona--Geología.<br/>Botánica--Arizona.<br/>Flora desértica.<br/>Regiones áridas--Congresos.
<br/><br/><label>Dewey Class. No.: </label>581.9095  / I5