9 1 50 seri Olimpiade Kimia, Biologi, dan Sains Junior Ivan Illustrator Drs. Valentino Barus Primary Author mixed material 9786028982122 Jakarta PT. Lestari Kiranatama 2010 Prestasi_Gemilang.jpg.jpg Ivan Illustrator Drs. Valentino Barus Primary Author mixed material 9786028982108 Jakarta PT. Lestari Kiranatama 2010 toookokh.jpg.jpg Ivan Illustrator Drs. Valentino Barus Primary Author mixed material 9786028982092 Jakarta PT.Lestari Kiranatama 2010 cerita_rakyat.jpg.jpg Drs. Valentino Barus Primary Author Ivan Illustrator mixed material 9786028982054 Jakarta PT Lestari Kiranatama 2010 mengenal.jpeg.jpeg Si Pemilik Dua Cangkang Dede Abdurohman Editor Kiki M R Illustrator Setiawan G Sasongko Primary Author Ivan Additional Author mixed material 9786023411986 Jakarta Timur Penerbit Bestari 2018 WhatsApp_Image_2021-10-05_at_6.35.26_PM.jpeg.jpeg Si Lonceng Laut Ivan Additional Author Dede Abdurohman Editor Kiki M R Illustrator Setiawan G Sasongko Primary Author mixed material 9786023411962 Jakarta Timur Penerbit Bestari 2018 WhatsApp_Image_2021-10-05_at_6.35.25_PM.jpeg.jpeg Drs. M. Said, M.Hum Primary Author Ivan Santria Editor mixed material 9789790771369 Jakarta Gema insani 2009 e.jpg.jpg Karya dan dunianya Ivan Abdilla Primary Author Pamusuk Eneste Editor mixed material 9797321886 Jakarta Grasindo 2003 WhatsApp_Image_2021-11-11_at_09.48.20.jpeg.jpeg Si Penyemprot Tinta Ivan Additional Author Syerif Nurhakim Editor Kiki M R Illustrator Setiawan G Sasongko Primary Author mixed material 9786023411917 Jakarta Timur Penerbit Bestari 2018 WhatsApp_Image_2021-10-05_at_6.35.25_PM_%281%29.jpeg.jpeg