Report Measurement of radioactivity in Norway. Annual report for l987. Berg, T. C. Publication details Series: NILU OR 68/88 Publisher: NILU Year: 1988 ISBN: 82-7247-971-0 File: NILU OR 68/88 (pdf) Link: http://urn.nb.no/URN:NBN:no-nb_digibok_2015102608106