@article{56815,
      author = {Skold, Bernard Harold, and Kunzel, Erich, and Davis, Olive  Stull.},
      url = {http://library.usi.edu/record/56815},
      title = {Davis embryology laboratory guide; 48-hour chicken embryo  and 10-mm pig embryo},
      publisher = {Iowa State University Press},
      recid = {56815},
      pages = {ix, 227 p.},
      address = {Ames,},
      year = {1972},
}