Foster, Margaret Dorothy   1895-1970 <br/><br/>
Studies of the Zeolites : composition of Zeolites of the Natrolite group / 
by Margaret D. Foster. 
 -- Washington :   United States Government Printing Office,   1965 
 - 10 p. -- 
 (Geological Survey Professional Paper  ;  504-D).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geoquímica
<br/><br/><label>Universal Decimal Class. No.: </label>550.4