Split into: Trudy i materialy nauchnykh kongressov i soveshchaniĭ, opublikovannye za rubezhom v ... gg. Obshchestvennye nauki, and: Trudy i materialy nauchnykh kongressov i soveshchaniĭ, opublikovannye za rubezhom v ... gg. Estestvennye nauki, tekhnicheskie nauki.