@article{4275,
      recid = {4275},
      author = {Hu, Zhongheng.},
      title = {Ontogeny and sexual dimorphism of Lower Paleozoic  Trilobita.},
      publisher = {Paleontological Research Institution,},
      address = {Ithaca, N. Y.,},
      pages = {[31]-155 p.},
      year = {1971},
      note = {Thesis - University of Cincinnati.},
      url = {http://library.usi.edu/record/4275},
}