@article{,
      note = {At head of title: Programmed instruction.},
      url = {http://library.usi.edu/record/104621},
      title = {Magnetic theory : magnetism, P-IV-1R.},
      publisher = {Naval Air Technical Training Command,},
      number = {CNATT-M 544 PAT},
      recid = {104621},
      pages = {i, 24 p. :},
      address = {[Washington, D.C.?] :},
      year = {1985},
}