Ekren, E. B.  1923- <br/><br/>
Geological-geophysical investigations of bedrock in the Island Fall quadrangle, Aroostook and Penobscot Counties, Maine, 
by E.B. Ekren and F.C. Frischknecht. 
 - Washington,  U.S. Govt. Print. Off.,  1967. 
 - iv, 36 p.  illus., maps (2 fold. col. in pocket)  29 cm. 
 - Geological Survey professional paper  527 .
<br/><br/>Bibliography: p. 35-36. 
<br/><br/><label>LCCN: </label>gs 67000152 //r922 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Maine--Aroostook County.<br/>Geology--Maine--Penobscot County.<br/>Geophysics--Maine--Aroostook County.<br/>Geophysics--Maine--Penobscot County.
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 527 
<br/><br/><label>Dewey Class. No.: </label>557.41/1