Kent, Allen.
Encyclopedia of Library and Information Science Vol-7 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.588 :
0-8247-2107-1
2K / K8.7
Encyclopedia of Library and Information Science Vol-7 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.588 :
0-8247-2107-1
2K / K8.7