https://vital.lib.tsu.ru/vital/access/manager/Index ${session.getAttribute("locale")} 5 Synthesis of beta-propiolactone by in situ catalytic interaction of formaldehyde with ketene https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000996100 Wed 08 Feb 2023 09:17:15 KRAT ]]>