Author(s): Damsar -, Indrayani -,

Date: Jun 17, 2016

Publisher: Universitas Andalas, Universitas Andalas

Author(s): Syahrizal Syahrizal,

Date: Mar 22, 2016

Publisher: Universitas Andalas, Universitas Andalas

Author(s): Syaiful - Kasman,

Date: Nov 01, 2015

Publisher: Universitas Andalas, Universitas Andalas