Scientific expedition of the Institute of Medical Parasitology and Tropical Medicine to the Irkutsk region

1-18 August 1975. USSR. Irkutsk Region. Researchers from the Moscow Institute of Medical Parasitology and Tropical Medicine named after E. I. Martsinovsky Oleg Petruchik, Sergei Ryabov and Lyudmila Antsyshkina (from left to right) collect material for research in the taiga near the village of Magistralny in the Kazachinsko-Lensky District during the IMPiTM scientific expedition to develop effective measures to combat blood-sucking insects in the area of the construction of the Baikal-Amur Mainline. The exact date of the photo is unknown. Edgar Bryukhanenko/TASS