Linguaphone Russian．RC.17 E．RC.18 E Linguaphone Russian．R.11 E．RC.12 E Linguaphone Russian．R.13 E．RC.14 E Linguaphone Russian．R.27 E．R.28 E Linguaphone Russian．R.7 E．R.8 E Linguaphone Russian．RC.15 E．RC.16 E Linguaphone Russian．R.19 E．RC.20 E Linguaphone Russian．RC.9 E．R.10 E Linguaphone Russian．RS.1 E．RS.2 E Linguaphone Russian．R.1 EX．R.2 E