@inproceedings{paperid:1021697, author = {Hadavi, Fatemeh and Mahereh Zohravi}, title = {Introduction to calcareous nannofossils from the Koronk section in west Birjand (SE Iran}, booktitle = {13th International Conference on Calcareous Nanvplanktvnhay}, year = {2010}, keywords = {Kopet ـ Dagh; Aitamir & Abderaz Formations; nannofossils ; Late Turonian ـ Late Late Campanian}, }