Interkosmos 21 (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Interkosmos 21" in Polish language version.

refsWebsite

Global rank Polish rank

4,664^th place

7,741^st place

87^th place

5^th place

archive.is

Mark Wade: Kosmos 11K65M. [w:] Encyclopedia Astronautica [on-line]. [dostęp 2015-07-07]. (ang.).

skyrocket.de

space.skyrocket.de

Gunter Krebs: Interkosmos 20, 21 (AUOS-Z-R-P-IK). [w:] Gunter's Space Page [on-line]. 2014-09-23. [dostęp 2015-07-07]. (ang.).