Choiriah SU, Prasetyadi C, Kapid R, Yudiantoro DF. Nannofossil Distribution and Age of Kendeng Zone In Kalibeng River Section of Kedungringin, Plandaan Area, Jombang, East Java. Indonesian J. Geosci. [Internet]. 2020 Jan. 21 [cited 2025 Jun. 8];7(1):15-24. Available from: https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/365