Não informado. Summary of operations, California oil fields. Department of Natural Resources, Division of Oil and Gas.
Lua i Stíl Chicago (17ú heag.)Não informado. Summary of Operations, California Oil Fields. San Francisco, Calif: Department of Natural Resources, Division of Oil and Gas.
Lua MLA (8ú heag.)Não informado. Summary of Operations, California Oil Fields. Department of Natural Resources, Division of Oil and Gas.
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