7 1 10 Wilson Simangunsong Additional Author Frederik M. Poyk Additional Author mixed material 9797050475 Jakarta Gematama 2014 pksm2.jpg.jpg Wilson Simangunsong Additional Author Frederik M. Poyk Additional Author mixed material Jakarta Gematama 2014 pks1.jpg.jpg Wilson Simangunsong Additional Author Frederik M. Poyk Additional Author mixed material 9797050904 Jakarta Gematama 2014 pks5.jpg.jpg Wilson Simangunsong Additional Author Frederik M. Poyk Additional Author mixed material 9797050823 Jakarta Gematama 2013 pks4.jpg.jpg Wilson Simangunsong Additional Author Frederik M. Poyk Additional Author mixed material 9797050815 Jakarta Gematama 2013 pks8.jpg.jpg Wilson Simangunsong Additional Author Frederik M. Poyk Additional Author mixed material 9797050955 Jakarta Gematama 2013 pks6.jpg.jpg Wilson Simangunsong Additional Author Frederik M. Poyk Additional Author mixed material 979705084X Jakarta Gematama 2013 pks7.jpg.jpg