523,603 INTERNATIONAL 9th International Congress of Gerontology. July 2-7, 1972. Kiev U. S. S. R. The vol. is compiled under the auspices of D. P. Chebotarev, V. V. Prol^is, A. Ya. Mints, Kiev 1972 /druk.:/ Kniznaja Tipografía 8° Vol. 3. Section session. Abstracts, s. 462, nlb. 1.