(1927). The A. C. commutator motor / by C. W. Olliver.
Lua i Stíl Chicago (17ú heag.)The A. C. Commutator Motor / by C. W. Olliver. 1927.
Lua MLA (9ú heag.)The A. C. Commutator Motor / by C. W. Olliver. 1927.
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