Kent, Allen.
Encyclopedia of Library and Information Science Vol-44 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.409 :
0-8247-2044-X
2K / M9.44
Encyclopedia of Library and Information Science Vol-44 / - First Ed. / - New York-10016 : Marcel Dekker, Inc.. - p.409 :
0-8247-2044-X
2K / M9.44