TY - BOOK AU - Underwood,Mary ED - Longman & Co. TI - Effective class management: a practical approach T2 - Longman keys to language teaching SN - 0582746221 U1 - 428.0071 23 PY - 1991///. CY - London: PB - Longman, KW - English language KW - Study and teaching KW - Foreign speakers KW - Αγγλική γλώσσα KW - Σπουδή και διδασκαλία ER -