Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HU CHUNG-HUNG,"635. ONTOGENIES OF TWO MIDDLE ORDOVICIAN TRILOBITES FROM THE EDINBURG FORMATION, VIRGINIA",Transactions and proceedings of the Paleontological Society of Japan. New series,,PALAEONTOLOGICAL SOCIETY OF JAPAN,1974,1974,95,353-363,https://cir.nii.ac.jp/crid/1570572703030300672,