An Economic and social atlas of Maryland / 
by Derek Thompson and others ; Assisted by Kathleen Danz and others 
 - University of Maryland, College Park :  Dept. of Geography,  1974 
 - 126 p. ;  ill. (part col.);  28 cm. 
 - Occasional papers in geography (College Park, Md.) no.3. .
<br/><br/> Errata slip inserted. 
<br/><br/>Bibliography: p. 99-126 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Maryland--Economic conditions<br/>Maryland--Social conditions<br/>Maryland--Economic conditions--Maps