Anderson, Kris The Mystery of the blue mines / Kris Anderson. - 54 s.: res. ; 20 cm. - Penguin Readers. . Level 3.Pre-Intermediate(1200 words) ISBN: 0582427231 Subjects--Topical Terms: English languages--Study and teachingİngiliz dili--Çalışma ve öğretim LC Class. No.: PE1128 / .M97 2000