title: [Professor Nikolaĭ Vasil'evich Khelevin (on his 60th birthday)].
mesh_terms: D049673:History, 20th Century; D010274:Parasitology / Q000266:history; D014586:USSR
vernacular_title: Professor Nikolaĭ Vasil'evich Khelevin (k 60-letiiu so dnia rozhdeniia)