BibSlavKon: 13 hits for Social and Cultural Development of the Slavonic Nations after 1945 on page 2

The Bibliography of International Congresses of Slavists (1929-2018) was converted from thirteen printed volumes into a database in cooperation with the Slavonic Library in Prague (Slovanská knihovna Praha) and contains 8550 records. Since 2008 the Bibliography appear only in electronic form and will be updated in five-year interval according to the next Congresses of Slavists. The further information can be found here. The overview of the classification can be found: here.

Your search for Social and Cultural Development of the Slavonic Nations after 1945 provides 13 hits
11	Kijev v duchovnom obščenii slavjanskich narodov : (tradicii i sovremennosť) Sochan’, P. S. - Istorija, kuľtura, foľklor ta etnohrafija slov’jans’kych narodiv : dopovidi (1983), 28-50
12	Kuľturnoje vzaimoobogaščenije narodov SSSR v 60–70-ch godach Šerstobitov, V. P. - Istorija, kuľtura, etnografija i foľklor slavjanskich narodov : IX Meždunarodnyj s“jezd slavistov : Kijev, sentjabr’ 1983 g. : doklady sovetskoj delegacii (1983), 20-34
13	Bulgarian-Polish Cultural Relations (1944-1952) Todorova, R. - Études historiques (1983), 27-54

Bibliography of International Congresses of Slavists (BibSlavKon)

Kijev v duchovnom obščenii slavjanskich narodov : (tradicii i sovremennosť)

Kuľturnoje vzaimoobogaščenije narodov SSSR v 60–70-ch godach

Bulgarian-Polish Cultural Relations (1944-1952)