TY - EBOOK TI - Teaching the core skills of listening & speaking [electronic resource] AU - Palmer, Erik, 1953-. SN - 9781416619017 (e-book) PB - ASCD PP - Alexandria, Virginia : ASCD, 2014. PY - 2014 UR - https://library.korea.ac.kr/detail/?cid=CAT000045919719&ctype=e