Waugh, Albert Edmund 1902-, <br/><br/>
Sundials :  Their theory and construction / 
Albert e. waugh 
 - 228 páginas 
<br/><br/><label>ISBN: </label>0-486-22947-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relojes de sol
<br/><br/><label>LC Class. No.: </label>QB215  / W37