37037
The earth's physical resources prepared
Milton Keynes
The open University Press
1973
v. ill. )some col(. maps. )Some col(
Science: a second level course
Includes bibliographical references.
by an Open University Course Team
Contents: -Block 1. Resources and systems. -Block 2. Energy resouces. -Block 3. Mineral deposits.
، Natural resources
HC
55
.
O74
AU
TI
SE
Open Univeristy. Earth's physical Resources Course Team
LE
