Investigation of lithostratigraphy from Tirgan formation in north east_ north west of Mashhad (stratigraphical section from Mozdouran_ Kalat road_ Radkan vally)
Writers : Keshavarz, Gholam Abbas;supervisor:M. Nagafi; advisor: M. H. Adabi Refference : M.Sc.Thesis _ Ferdowsi university, Mashhad Publishing Year : 1376