@article{54622,
      note = {Translation of Lichtberechnungen und Lichtmessungen.},
      author = {Keitz, H. A. E.},
      url = {http://library.usi.edu/record/54622},
      title = {Light calculations and measurements; an introduction to  the system of quantities and units in light-technology and  to photometry},
      publisher = {St. Martin's Press},
      recid = {54622},
      pages = {xiii, 430 p.},
      address = {[New York]},
      year = {1971},
}