TY - BOOK A1 - /‎ Patricia Ackert.,آک‍رت‌,Ackert TI - Concepts and comments: a reader for students of English as a second language PB - سازمان اسناد و كتابخانه ملی جمهوری اسلامی ایران SN - 101756466 UR /book/101756466/Concepts-and-comments-a-reader-for-students-of-En/ ER -