@article{54821,
      author = {Crawford, Rudd A. and Copp, David H and Meder, Albert E.},
      url = {http://library.usi.edu/record/54821},
      title = {Introduction to computer programming},
      publisher = {Houghton Mifflin},
      recid = {54821},
      pages = {154p.},
      address = {Boston,},
      year = {1969},
}