Bibliography of International Congresses of Slavists (BibSlavKon)

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 N6272 provides 3 hits
1	Die Entlehnungen des Niedersorbischen aus dem Niederdeutschen Bielfeldt, H. H. - Zeitschrift für Slawistik 17 (1972) 3, 329-345
2	Zu einigen niederdeutschen Quellen des altrussischen Schrifttums Raab, H. - Zeitschrift für Slawistik 3 (1958) 2/4, 323-335
3	Elementi neodredjenog člana u savremenom srpsko-hrvatskom književnom jeziku Ivić, M. - Referati za VII međunarodni kongres slavista u Varšavi (1973), 11-14

Bibliography of International Congresses of Slavists (BibSlavKon)

Die Entlehnungen des Niedersorbischen aus dem Niederdeutschen

Zu einigen niederdeutschen Quellen des altrussischen Schrifttums

Elementi neodredjenog člana u savremenom srpsko-hrvatskom književnom jeziku