ធ្វើឱ្យគណនីឥតគិតថ្លៃរបស់អ្នក!
បណ្ណាល័យភាពយន្តនិងវីដេអូរបស់យើងអាចត្រូវបានមើលឬទាញយកដោយសមាជិកតែប៉ុណ្ណោះ
បន្តមើលដោយឥតគិតថ្លៃ➞ចំណាយពេលតិចជាង ១ នាទីដើម្បីចុះឈ្មោះបន្ទាប់មកអ្នកអាចរីករាយនឹងចំណងជើងភាពយន្តនិងទូរទស្សន៍គ្មានដែនកំណត់។
![](https://image.tmdb.org/t/p/w780/2pirVhIAjGmq2EIBGpUJC1LKr9v.jpg)
Rocks: Where They Come From (1963)
Follows Don as he sees different kinds of rocks at a granite quarry, sandstone cliff and museum. Demonstrates the effects of water, heat and pressure in the formation of rocks.
ការដោះលែង: Jan 01, 1963
ប្រជាប្រិយភាព: 0.001
ភាសា:
ស្ទូឌីយោ: Coronet Instructional Films
ប្រទេស: United States of America
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