100 important things of science (Khmer)
Kwan, Kim Tae
100 important things of science (Khmer) Kim Tae Kwan ; illustrated by Yun Mun Pyeong - Phnom Penh Sipar 2016 - 100 p.
Khmer language materials.
Sun--History
Astronomy--History
100 important things of science (Khmer) Kim Tae Kwan ; illustrated by Yun Mun Pyeong - Phnom Penh Sipar 2016 - 100 p.
Khmer language materials.
Sun--History
Astronomy--History