สายวิ้งอาจารย์ให้มา7บน.ล่าง งวดทีแล้วหลุด งวด1.มิ.ย.62นี้ต้องมาแน่
Water is one of the most abundant and also one of the most important and valuable resources on the planet. Without it, all life on earth will cease to exist. Citizens access to clean drinking water is a measure of a country's development as well as its people's growth.
from: http://ezinearticles.com/?Sri-Lankas-Community-Development-and-Livelihood-Projects-1:-Makaldeniya-Water-Project&id=7254246
