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Rt 372.7044 PRI p. Author : Priatna, Dudung .... Some phonological problems 
and remedial exercises in teaching English to Toba Batak students / F. Peris 
Lubis.							
Rt 372.7044 PRI p. Author : Priatna, Dudung .... Some phonological problems 
and remedial exercises in teaching English to Toba Batak students / F. Peris 
Lubis.