TY - BOOK AU - Harris, Robert T. AU - Jarrett, James L., ED - ED - ED - ED - SN - 2 PY - 1956///46 CY - New York PB - Longmans, Green KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Language and languages.;Communication N1 - Includes bibliographies; 5 ER -