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Supertopics:
Petroleum
Maintaining the High Energy Level of Petroleum
Alternatives to Petroleum
Cross-References:
Renewable Energy Resources
Subtopics:
Alternatives to Petroleum by Application
Alternatives to Petroleum Liquid Fuels
Non-Petroleum-Based Plastics
Viability of Renewable Energy Resources
Renewable Energy Resources As Viable
Renewable Energy Resources as Nonviable
Viability of Alternatives to Fossil Fuels Miscellany
Petroleum Substitute Ecological Problems
Ecological Problems of Biofuel Production