Kent, Allen.
Encyclopedia of Library and Information Science Vol-21 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.505 :
0-8247-2021-0
2K / K8.21
Encyclopedia of Library and Information Science Vol-21 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.505 :
0-8247-2021-0
2K / K8.21