Item Description: Some vols. are 2nd ed.; v. 14 lacks edition statement.
Individual chapters have already appeared as fascicles, 1961-1968.
Physical Description: v. : ill., maps (some col.) ; 24 cm.
Bibliography: Includes bibliographies and indexes.
ISBN: 0521850738
0521070511
0521082307
Access: Electronic access restricted to Villanova University patrons.