Nauchnai͡a konferent͡sii͡a "Ėvoli͡ut͡sionnai͡a teorii͡a i problemy fitogelʹmintologii," posvi͡ashchennai͡a 100-letii͡u so dni͡a rozhdenii͡a prof. A.A. Paramonova (1991? Moscow, R.S.F.S.R.?)