27. Health and Safety Guide 606,391 MAGNETIC Magnetic fields : health and safety guide / United Nations Environment Programme, International Radiation Protection Association, World Health Organization. - Geneva: WHO, 1989. - 24 s. -, 21 cm. - (Health and Safety Guide, ISSN 0259-7268 ; no. 27) Bibliogr. s. 24 ISBN 92-4-154348-5