title: [Along the true path of friendship and cooperation of Bulgarian and Soviet parasitological science and practice].
mesh_terms: D002031:Bulgaria; D007391:International Cooperation; D010274:Parasitology; D014586:USSR
vernacular_title: Po vernomu puti druzhby i sotrudnichestva Bolgarskoĭ i sovetskoĭ parazitologicheskoĭ nauki i praktiki