22. Environmental Health Criteria 555,899 ULTRASOUND Ultrasound. - Geneva : World Health Organization, 1982. - 199 s. : il. ; 21 cm. - (Environmental Health Criteria ; 22) U doiu 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. 146-189 ISBN 92-4-154082-6