@article{434405,
      recid = {434405},
      title = {Concordance United States patent classification to  international patent classification / [electronic resource]  :},
      publisher = {U.S. Dept. of Commerce, Patent and Trademark Office,  Patent Documentation Organizations :},
      address = {Washington, D.C. :},
      pages = {1 online resource},
      note = {Description based on: 1995 ed.},
      abstract = {Chiefly tables.},
      url = {http://library.usi.edu/record/434405},
}