Luna 20 (Swedish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Luna 20" in Swedish language version.

refsWebsite

Global rank Swedish rank

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44^th place

nasa.gov

nssdc.gsfc.nasa.gov

”NASA Space Science Data Coordinated Archive” (på engelska). NASA. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1972-007A. Läst 25 mars 2020.