a Article van der Giessen, P.H. Design, construction and performance of a secondary collimator for a cobalt unit PDF Istituti Editoriali e Poligrafici Internazionali Is part of Physica medica : european journal of medical physics : XVIII, 4, 2002 Permissions Streaming only | NO download | NO Copy/paste | NO Printing Streaming only | NO download | NO Copy/paste | NO Printing EUR 15.00 VAT Excluded