%0 Journal Article %T Calcareous nannofossils from chalky limestone of upper Abderaz Formation and lower part of Abtalkh Formation in the Kopet- Dogh range NE Iran %A Hadavi, Fatemeh %A Notghi Moghaddam, Marziyeh %J Arabian Journal of Geosciences %@ 1866-7511 %D 2010