@article{481612,
      recid = {481612},
      title = {Maternal recognition of pregnancy [electronic resource]..  Symposium on Maternal Recognition of Pregnancy},
      publisher = {Excerpta Medica,},
      address = {Amsterdam ;},
      pages = {ix, 425 p. :},
      year = {1979},
      url = {http://library.usi.edu/record/481612},
}