Linguaphone Russian．R.13 E．RC.14 E Linguaphone Russian．R.11 E．RC.12 E Linguaphone Russian．R.23 E．R.24 E Linguaphone Russian．R.3 E．R.4 E Linguaphone Russian．RC.15 E．RC.16 E Linguaphone Russian．RC.17 E．RC.18 E Linguaphone Russian．R.19 E．RC.20 E Linguaphone Russian．R.1 EX．R.2 E Linguaphone Russian．R.25 E．R.26 E Linguaphone Russian．R.27 E．R.28 E