例句 /

MEI Shi-long,1991.Middle and Late Cambrian conodont and trilobite biostratigraphy in Wanxian,Hebei.Unpublished Ph.D thesis of Peking University.

MEI Shi-long,1991.Middle and Late Cambrian conodont and trilobite biostratigraphy in Wanxian,Hebei.Unpublished Ph.D thesis of Peking University.

武桂春,2003.鲁西地区晚寒武世牙形石.北京大学博士研究生学位论文.