@article{178924,
      note = {Distributed to depository libraries in microfiche.},
      author = {Vari, Richard P. and Ortega, Hernán.},
      url = {http://library.usi.edu/record/178924},
      title = {The catfishes of the neotropical catfish family  Helogenidae (Ostariophysi:Siluroidei) /},
      publisher = {Smithsonian Institution Press,},
      recid = {178924},
      pages = {iii, 20 p.:},
      address = {Washington, D.C. :},
      year = {1986},
}