Laycock, George, <br/><br/>
The ohio valley, your guide to america's heartland / 
By George laycock and ellen laycock 
 - 388 páginas 
<br/><br/> Dolphin books 
<br/><br/><label>ISBN: </label>0385175914  (rustica) 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Valle del río Ohio--Guías de viajeros
<br/><br/><label>LC Class. No.: </label>F520  / L38