J P Bolívar et al.
Journal of radiological protection : official journal of the Society for Radiological Protection, 33(1), 199-212 (2013-01-09)
In order to fill a gap in the open literature, occupational exposures and activity concentrations have been assessed in two NORM industrial plants, located in the south-west of Spain, devoted to the production of mono-ammonium phosphate (MAP) and di-ammonium phosphate