Kent, Allen.
Encyclopedia of Library and Information Science Vol-20 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.512 :
0-8247-2020-2
2K / K8.20
Encyclopedia of Library and Information Science Vol-20 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.512 :
0-8247-2020-2
2K / K8.20