Luna 21 (Finnish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Luna 21" in Finnish language version.

refsWebsite

Global rank Finnish rank

75^th place

110^th place

1web.archive.org

1^st place

1^st place

nasa.gov (Global: 75^th place; Finnish: 110^th place)

nssdc.gsfc.nasa.gov

NASA - NSSDC - Spacecraft - Trajectory Details NASA. Arkistoitu 3.10.2015. Viitattu 2.8.2015.
NASA - NSSDC - Spacecraft - Details NASA. Viitattu 2.8.2015.

web.archive.org (Global: 1^st place; Finnish: 1^st place)

NASA - NSSDC - Spacecraft - Trajectory Details NASA. Arkistoitu 3.10.2015. Viitattu 2.8.2015.