15987 353 10 Muhamad Ridha Primary Author 1321412030 Additional Author mixed material Pustaka Politeknik Caltex Riau 2016 Muhammad Ridho F Primary Author 1321412029 Additional Author mixed material Pekanbaru Pustaka Politeknik Caltex Riau 2016 Mentari Cania Primary Author 1321412028 Additional Author mixed material Pekanbaru Pustaka Politeknik Caltex Riau 2016 M.Hasan Primary Author 1321412027 Additional Author mixed material Pekanbaru Pustaka Politeknik Caltex Riau 2016 M. Nosa Gusriatma Primary Author 1321412026 Additional Author mixed material Pekanbaru Pustaka Politeknik Caltex Riau 2016 M Rayhan Efendi Primary Author 1321412025 Additional Author mixed material Pekanbaru Pustaka Politeknik Caltex Riau 2016 Kartika Dwi Putri Primary Author 1321412024 Additional Author mixed material Pekanbaru Pustaka Politeknik Caltex Riau 2016 Januardi Antoni Primary Author 1321412023 Additional Author mixed material Pekanbaru Pustaka Politeknik Caltex Riau 2016 Ibnu Ghiffary Primary Author 1321412022 Additional Author mixed material Pekanbaru Pustaka Politeknik Caltex Riau 2016 Hocky Yacup Primary Author 1321412021 Additional Author mixed material Pekanbaru Pustaka Politeknik Caltex Riau 2016