@article{198576,
      recid = {198576},
      author = {Wilson, S. A.},
      title = {Analysis of soil reference materials PL-1 and BPGM-1 for  the Polish Committee on Standardization Measures and  Quality Control [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey :},
      address = {Denver, Co. :},
      pages = {18 leaves :},
      year = {1993},
      note = {Cover title.},
      url = {http://library.usi.edu/record/198576},
}