Hill, 1974
From dinoflaj2
Hill, P.J., 1974: Stratigraphic palynology of acritarchs from the type area of the Llandovery and the Welsh Borderland. Review of Palaeobotany and Palynology, v.18, no.1-2, p.11-23, pl.1.
Hill, P.J., 1974: Stratigraphic palynology of acritarchs from the type area of the Llandovery and the Welsh Borderland. Review of Palaeobotany and Palynology, v.18, no.1-2, p.11-23, pl.1.
