Protective devices against diagnostic medical X-radiation - Part 1: Determination of attenuation properties of materials (IEC 61331-1:1994); German version EN 61331-1:2002— 17 стр.
Protective devices against diagnostic medical X-radiation - Part 1: Determination of attenuation properties of materials (IEC 61331-1:1994); German version EN 61331-1:2002— 17 стр.