Zen, E-An  1928-2014 <br/><br/>
Taconic stratigraphic names : definitions and synonyies / 
by E-An Zen. 
 -- Washington :   United States Government Printing Office,   1964 
 - 95 p. -- 
 (Geological Survey Bulletin  ; 1174).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología - Nomenclatores
<br/><br/><label>Universal Decimal Class. No.: </label>55(083.72)