Devonian) Kellwasser horizons: A new U-Pb zircon date from Steinbruch Schmidt(Kellerwald, Germany). The Journal of Geology. 2004, 112 (4): 495–501. Bibcode:2004JG
Devonian) Kellwasser horizons: A new U-Pb zircon date from Steinbruch Schmidt(Kellerwald, Germany). The Journal of Geology. 2004, 112 (4): 495–501. Bibcode:2004JG
Devonian) Kellwasser horizons: A new U-Pb zircon date from Steinbruch Schmidt(Kellerwald, Germany). The Journal of Geology. 2004, 112 (4): 495–501. Bibcode:2004JG
Devonian) Kellwasser horizons: A new U-Pb zircon date from Steinbruch Schmidt(Kellerwald, Germany). The Journal of Geology. 2004, 112 (4): 495–501. Bibcode:2004JG