LASERS 555,898 Lasers and optical radiation ;. - Geneva s World Health Organization, 1982. - 154 s. : il. ; 21 cm. -(Environmental Health Criteria , 23) U doiu s. tyt. i Published under the joint sponsorship of the United Nations Environment Programme, the World Health Organization, and the International Radiation Protection Association. -Bibliogr. s. 133-146 ISBN 92-4-154083-4