@article{oai:niigata-u.repo.nii.ac.jp:00006787, author = {Kubota, Aya and Iba, Yasuhiro and Hikida, Yoshinori and Yi, Keewook}, journal = {Science reports of Niigata University. (Geology), Science reports of Niigata University. (Geology)}, month = {Oct}, note = {The 2nd International Symposium on Earth History of Asia 31 October – 3 November, Niigata, Japan}, pages = {70--71}, title = {Micro-organisms in amber from the Aptian (Cretaceous) of Yezo Group, northern Japan.}, volume = {29(Supplement)}, year = {2014} }