QUALITY 543,045 Quality assurence in diagnositic radiology : a guide prepared following a workshop held in Nauherberg, Federal Republic oi Germany, 20-24- October 1980, and org. / by Institute of Radiation Eygieńe, Federal Health Office /etc./ - Geneva :World. Health Organisation, 1982.- 65 s. wykr; 25 ISBN 92-4-154164-4