@article{9951,
      note = {See English version in INDUSTRIAL PROPERTY 1975, Vol 14,  No 7, p 220-223.},
      author = {Kopff, Andrzej,},
      url = {http://tind.wipo.int/record/9951},
      title = {Lettre de Pologne /},
      recid = {9951},
      pages = {1 volume ([4] pages) ;},
}