title: [30 years along the path of friendship and cooperation between the USSR and the GDR].
mesh_terms: D005859:Germany, East; D049673:History, 20th Century; D007391:International Cooperation; D011634:Public Health / Q000266:history*; D012950:Socialism / Q000266:history; D014586:USSR
vernacular_title: 30 let po puti druzhby i sotrudnichestva mezhdu SSSR i GDR.