Não informado. Summary of operations, California oil fields. Department of Natural Resources, Division of Oil and Gas.
Citace podle Chicago (17th ed.)Não informado. Summary of Operations, California Oil Fields. San Francisco, Calif: Department of Natural Resources, Division of Oil and Gas.
Citace podle MLA (8th ed.)Não informado. Summary of Operations, California Oil Fields. Department of Natural Resources, Division of Oil and Gas.
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