Naumova, 1939
From dinoflaj2
Naumova, S.N., 1939: Spores and pollen of the coals of the U.S.S.R. Report of the XVII International Geological Congress, Moscow, 1937, v.1, p.353-364.
Naumova, S.N., 1939: Spores and pollen of the coals of the U.S.S.R. Report of the XVII International Geological Congress, Moscow, 1937, v.1, p.353-364.
