Materialy VI [i.e. shestogo] sʺezda obshchestva "Znanie" RSFSR, aprelʹ 1977 goda
Publisher: O-vo "Znanie" RSFSR
Published: 1977
Place of publication: Moskva
Language: rus
Number of pages: 86
Notes: At head of title: Obshchestvo "Znanie" RSFSR.