BibSlavKon: 131 hits for R7820 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 R7820 provides 131 hits
11	Župnaja organizacija u slavjan i jeje roľ v razvitii gosudarstvennosti Gračev, Viktor Petrovič - Istorija, kuľtura, foľklor i etnografija slavjanskich narodov : VI meždunarodnyj s“jezd slavistov (Praga, 1968) : doklady sovetskoj delegacii (1968), 149-167
12	Jazyk russkoj literatury i problemy jego razvitija Unbegaun, Boris Ottokar - Communications de la délégation française et de la délégation suisse : VIe Congrès international des slavistes : Prague, 7-13 août 1968 (1968), 129-134
13	Parallelizm v literaturnom razvitii Bajrona i Puškina Vickery, W. N. - American Contributions to the Fifth International Congress of Slavists : Sofia, September 1963 (1963), 371-401
14	Roľ narodnogo eposa v razvitii serbskoj literatury Kravcov, N. I. - Istorija, foľklor, iskusstvo slavjanskich narodov : doklady sovetskoj delegacii (1963), 348-385
15	Razvitije ponjatija vremeni v svete slavjanskogo časъ Jakobsson, G. - Scando-Slavica (1958), 286-307
16	Razvitije indojevropejskogo sklonenija v obščeslavjanskom jazyke Kuznecov, P. S. - Issledovanija po slavjanskomu jazykoznaniju (1961), 114-164
17	Razvitije indojevropejskogo sklonenija v obščeslavjanskom jazyke Kuznecov, P. S. - 1958, 62 s.
18	Roľ grammatiki v razvitii kommunikativnoj funkcii jazyka Uliu, Adriana; Kiraly, Maria - Romanoslavica (2008), 135–144
19	Le riviste slavistiche italiane tra le due guerre mondiali Delľagata, Giuseppe - Contributi italiani al XIV Congresso internazionale degli slavisti : (Ohrid, 10–16 settembre 2008) (2008), 367–401
20	Tendencii razvitija russkoj frazeologii : (na fone češskoj) Stěpanova, Ludmila - Slavia : časopis pro slovanskou filologii 82 (2013) 1/2, 203–212

Bibliography of International Congresses of Slavists (BibSlavKon)