Stewart, John D. <br/><br/>
Gibraltar :  the keystone / 
By John D. Stewart. 
 - Boston :  Houghton Mifflin,  1967. 
 - xiv, 335 p. :  ill. ;  22 cm. 
<br/><br/>Bibliogr. p. 323-325; index p. 327-335 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gibraltar.