Manuals - Import export

We all, surely, seek to look after health and safety of our family, relatives and friends, especially in the conditions of modern life, rapid development of new technologies, and degraded state of ecology We began to think about that more often! People constructed plenty of instruments that assist in solving these tasks. But are we always aware of danger?! Lots of people dont even suspect that they should take care of personal radiation safety, as we cant feel, see or comprehend radiation any other way!