@article{158548,
      recid = {158548},
      author = {Sampson, Eric J.},
      title = {Methodological principles and specifications for  biological validation and transfer materials for aspartate  aminotransferase : proposed standard /},
      publisher = {U.S. Dept. of Health and Human Services, Public Health  Service, Centers for Disease Control,},
      address = {Atlanta, Ga. :},
      pages = { 60 leaves :},
      year = {1981},
      note = {"Clinical Chemistry Division, Centers for Disease  Control."},
      url = {http://library.usi.edu/record/158548},
}