1.717 ວິວ
Shows how common rocks and minerals can be identified by color, texture, hardness, streak and other standard procedures.
ປ່ອຍຕົວ: Jan 01, 1971
ເວລາແລ່ນ: 13 ນາທີ
ພາສາ:
ສະຕູດິໂອ: Coronet Instructional Films
ປະເທດ: United States of America
ຫລໍ່:
ລູກເຮືອ: Tom Ascher (Script), Tom Ascher (Producer)
