[Fruitful cooperation (on the 20th anniversary of the Warsaw Pact)].
D005061:Europe, Eastern; D049673:History, 20th Century; D007391:International Cooperation; D008887:Military Medicine / Q000266:history*; D011044:Poland; D014187:Transportation of Patients; D014586:USSR
Plodotvornoe sotrudnichestvo (k 20-ĭ godovshchine Varshavskogo Dogovora)