A science book about matter.
A science book about the different stages and forms of Water.
A science book about matter: it's properties and form etc.
People from around the world travel to Coober Pedy, Australia, with hopes of getting rich. This town is full of valuable stones called 'opals'. Some opals are worth millions, but they are extremely hard to find. What influences the value of an opal? What does it take to find them?
Cerita tentang Si Amar Anak Maritim