Wilmarth, M. Grace  1866-1949. <br/><br/>
Names and definitions of the geologic units of California. 

 -  U.S. Govt. Print. Off.,  1931. 
 - 97 p. 
<br/><br/><label>LCCN: </label>gs 31000041  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--California.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 826