@article{55785,
      author = {Needham, James G. and Needham, Paul R.},
      url = {http://library.usi.edu/record/55785},
      title = {A guide to the study of fresh-water biology},
      publisher = {Holden-Day,},
      recid = {55785},
      pages = {107 p.},
      address = {San Francisco,},
      year = {1962},
}