Raeburn, Colin. <br/><br/>
The Chad basin: Geology and water supply, 

 - [London]  Published by authority of the Nigerian government,  1934. 
 - 61 p.  illus., maps. (part fold.) fold. diagr.  26 cm. 
<br/><br/><label>LCCN: </label>gs 34000147  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Nigeria--Chad Basin.<br/>Water-supply--Nigeria--Chad Basin.
<br/><br/><label>LC Class. No.: </label>QE327.N5  / R28