С-ОВ-01-2004 Справочник по схемам вентсистем для помещений различных категорий и классов для предприятий нефтеперерабатывающей и нефтехимической промышленности
“ Knock, And He'll open the door. Vanish, And He'll make you shine like the sun. Fall, And He'll raise you to the heavens. Become nothing, And He'll turn you into everything. ” ― Rumi
