Harley, J. B. (John Brian). <br/><br/>
Ordnance Survey maps :  a descriptive manual / 
by J. B. Harley. 
 - Ordnance Survey :  Southampton,  1975. 
 - xvi, 201 p., 40 i.e. 46 p. of plates :  ill. (chiefly col.), maps (chiefly col.) ;  31 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 185-191. 
<br/><br/><label>LCCN: </label>75-330828 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Great Britain. Ordnance Survey
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cartography--Great Britain.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Great Britain--Maps, Topographic.