Applications of luminescence technicques to earth resource studies 

 - Washington, D.C. :  United States Government Printing Office,  1978 
 - 30 p. ;  30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Roads--Maine<br/>Bicycle trails
<br/><br/><label>Dewey Class. No.: </label>388.12