Book
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Soal & Penyelesaian Olimpiade Matematika Tingkat Nasional
author: Prof Yohanes Surya, Ph.D
isbn: 9786026878557
publisher: PT Olimpiade Sains Indonesia
date created: 2017

Soal & Penyelesaian Olimpiade Matematika Tingkat Provinsi
author: Prof. Yohanes Surya, Ph.D
isbn: 9786026878571
publisher: PT Olimpiade Sains Indonesia
date created: 2017

Soal & Penyelesaian Olipiade Matematika Tingkat Kabupaten/Kota
author: Tim Prof. Yohanes Surya, Ph.D.
isbn: 9786026878557
publisher: Pt. Kandel
date created: 2017