35. Environmental Health Criteria 555,926 EXTREMELY Extremely low frequency (ELF) fields /. - Geneva : World Health Organization, 1984. - 131 s. : il., wykr. ; 21 cm. - (Environmental Health Criteria / 35) U dołu s. tyt.: Published under the joint sponsorship of the United Nations Environment Programme, the World Health Organization, and the International Radiation Protection Association. -Bibliogr. s. 103-128 ISBN 92-4-154095-8