Kent, Allen.
Encyclopedia of Library and Information Science Vol-39 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.430 :
0-8247-2039-3
2K / K8.39
Encyclopedia of Library and Information Science Vol-39 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.430 :
0-8247-2039-3
2K / K8.39