TY - BOOK TI - Innovations and issues in education : planning for competence AU - Callahan, Joseph F., ed. AU - Clark, Leonard H., ed. SN - 0023180501 PB - Macmillan PP - New York : Macmillan, c1977. PY - 1977 UR - https://library.korea.ac.kr/detail/?cid=CAT000000123171&ctype=m