Pats N. IMPECCABLE SERVICE TO THE CAUSE (TO THE 86TH ANNIVERSARY OF THE MILITARY DOCTOR, TEACHER, VETERAN OF THE DEPARTMENT OF GENERAL HYGIENE AND ECOLOGY IVANOV OLEG PAVLOVICH). HPCS [Internet]. 2022Dec.13 [cited 2024May20];28(4):254-68. Available from: http://hpcas.ru/article/view/12274