Wilhelms, Don E.  1930- <br/><br/>
Summary of lunar stratigraphy : telescopic observations / 
by Don E. Wilhelms. 
 -- Washington :   United States Government Printing Office,   1970 
 - 47 p. 
 (Geological Survey Professional Paper  ;  599-F).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astrogeología
<br/><br/><label>Universal Decimal Class. No.: </label>521:55:00