Lockheed A-12 (Galician Wikipedia)

Analysis of information sources in references of the Wikipedia article "Lockheed A-12" in Galician language version.

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archive.org

Robarge, David (2012). Archangel: CIA's Supersonic A-12 Reconnaissance Aircraft (PDF). Central Intelligence Agency. ISBN 978-1-92966-716-1. Arquivado dende o orixinal (PDF) o 2012.
McIninch, Thomas (1996). The Oxcart Story. Central Intelligence Agency. Arquivado dende o orixinal o 2009.

Robarge, David (2012). Archangel: CIA's Supersonic A-12 Reconnaissance Aircraft (PDF). Central Intelligence Agency. ISBN 978-1-92966-716-1. Arquivado dende o orixinal (PDF) o 2012.
McIninch, Thomas (1996). The Oxcart Story. Central Intelligence Agency. Arquivado dende o orixinal o 2009.
Murray, Frank. The Oxcart Story. Arquivado dende o orixinal o 2017.