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Showing below up to 20 results in range #1 to #20.

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1. (hist) ‎OPEC (brief history) ‎[14,952 bytes]
2. (hist) ‎Regenerative braking ‎[11,542 bytes]
3. (hist) ‎CANDU reactor ‎[11,155 bytes]
4. (hist) ‎Energy ‎[10,487 bytes]
5. (hist) ‎Oil sands ‎[10,459 bytes]
6. (hist) ‎Chernobyl nuclear accident ‎[10,458 bytes]
7. (hist) ‎Mineral ‎[10,217 bytes]
8. (hist) ‎Uranium ‎[9,841 bytes]
9. (hist) ‎Hydrologic cycle ‎[9,709 bytes]
10. (hist) ‎Nuclear reactor ‎[9,704 bytes]
11. (hist) ‎Radioisotope thermal generator ‎[9,504 bytes]
12. (hist) ‎Monopoly ‎[9,487 bytes]
13. (hist) ‎Types of photovoltaic cells ‎[9,483 bytes]
14. (hist) ‎Bernoulli's equation ‎[9,345 bytes]
15. (hist) ‎Steam assisted gravity drainage ‎[9,227 bytes]
16. (hist) ‎Uranium enrichment ‎[9,204 bytes]
17. (hist) ‎Greenhouse effect ‎[9,195 bytes]
18. (hist) ‎Carbon tax vs emissions trading ‎[9,102 bytes]
19. (hist) ‎Ground source heat pump ‎[9,092 bytes]
20. (hist) ‎Smog ‎[9,091 bytes]

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