[Great thinker and revolutionary (on the 150th anniversary of the birth of Friedrich Engels)].
D005858:Germany; D049672:History, 19th Century; D008887:Military Medicine; D012950:Socialism / Q000266:history*
Velikiĭ myslitel' i revoiutsioner (k 150-letiiu so dnia rozhdeniia Fridrikha Engel'sa)