Kent, Allen.
Encyclopedia of Library and Information Science Vol-17 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.508 :
0-8247-2017-2
2K / K8.17
Encyclopedia of Library and Information Science Vol-17 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.508 :
0-8247-2017-2
2K / K8.17