Kent, Allen.
Encyclopedia of Library and Information Science Vol-12 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.501 :
0-8247-2012-1
2K / K8.12
Encyclopedia of Library and Information Science Vol-12 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.501 :
0-8247-2012-1
2K / K8.12