4 1 10 Valentino Barus Additional Author Tri S. Mildawani Additional Author Mahfud Ikhwan Additional Author Sugiarti Additional Author Heryadi Siswo Martono Additional Author Dorina S Additional Author Putu Swasta Additional Author mixed material 9786028982146 Jakarta Lestari Kiranatama 2017 Prestasi_Gemilang_Anak_Bangsa_Seri_Olimpiade_Fisika.jpg.jpg Valentino Barus Additional Author Tris S. Mildawani Additional Author Dorina S. Additional Author Riyanto Additional Author mixed material 9786028982108 Jakarta Lestari Kiranatama 2010 Tokoh_dan_Pahlawan_seri_Presiden_dan_Tokoh-Tokoh_Pencerah.jpg.jpg Valentino Barus Additional Author Tris S. Mildawani Additional Author Dorina S. Additional Author Riyanto Additional Author mixed material 9786028982115 Jakarta Lestari Kiranatama 2010 Tokoh_dan_Pahlawan_seri_Pejuang_Kemerdekaan.jpg.jpg Valentino Barus Additional Author Tri S. Mildawani Additional Author Mahfud Ikhwan Additional Author Sugiarti Additional Author Heryadi Siswo Martono Additional Author Dorina S Additional Author Putu Swasta Additional Author mixed material 9786028982122 Jakarta Lestari Kiranatama 2017 Prestasi_Gemilang_Anak_Bangsa_Seri_Olimpiade_Kimia%2C_Biologi_dan_Sains_Junior.jpg.jpg