Man pages matching name killpg in section 3:

killpg.3.de	debian 10 / manpages-de-dev
killpg.3.en	debian 10 / manpages-dev
killpg.3.es	debian 10 / manpages-es
killpg.3.pt	debian 10 / manpages-pt-dev
killpg.3.de	debian 11 / manpages-de-dev
killpg.3.en	debian 11 / manpages-dev
killpg.3.es	debian 11 / manpages-es-dev
killpg.3.fr	debian 11 / manpages-fr-dev
killpg.3.pl	debian 11 / manpages-pl-dev
killpg.3.pt	debian 11 / manpages-pt-dev
killpg.3.de	debian 12 / manpages-de-dev
killpg.3.en	debian 12 / manpages-dev
killpg.3.es	debian 12 / manpages-es-dev
killpg.3.pl	debian 12 / manpages-pl-dev
killpg.3.ru	debian 12 / manpages-ru-dev