Addysg nwyddau / gwasanaethau Amlgyfrwng TROM 4.8 4.8 out of 5 stars (based on 4 reviews) Ardderchog75%Da iawn25%Cyfartaledd0%Gwael0%Ofnadwy0% Gantrom11/05/2020 TROM is a project that aims to showcase in detail the root cause of most of today’s problems Darllen mwy