Proton (programa satelital) (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Proton (programa satelital)" in Spanish language version.

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archive.org

William R. Corliss (1967). Scientific Satellites. Washington D.C.: Science and Technical Information Division, Office of Technology Utilization, National Aeronautics and Space Administration. pp. 779-780 idioma=en.

McDowell, Jonathan. «Launch Log». Jonathon's Space Report. Consultado el 30 de diciembre de 2018.
McDowell, Jonathan. «Satellite Catalog». Jonathon's Space Report. Consultado el 23 de octubre de 2020.

Chertok, Boris (2011). Rockets and People. Volume IV, The Moon Race. Washington D.C.: NASA. p. 21. OCLC 775599532.
Hart, Douglas M. (1987). The Encyclopedia of Soviet Spacecraft (en inglés). New York: Exeter Books. pp. 82-83. OCLC 17249881.
Asif A. Siddiqi. Challenge to Apollo: The Soviet Union and the Space Race, 1945–1974. Washington D.C.: NASA. p. 339-440, 967, 971. OCLC 1001823253.