Видео с ютуба Local Invention Sri Lanka

Young Inventors in Sri Lanka

SN-2020 International Inventions and Innovations Competition in Sri Lanka

“Innovate Sri Lanka” Invention and Innovation Competition and Exhibition 2019

Invented by a Sri Lankan Inventor| Ru News

Удивительная древняя гидравлическая цивилизация | Шри-Ланка

Sahasak Nimavum 2019 -invention exhibition gets underway

🇱🇰 The Ancient Irrigation Genius of Sri Lanka | A Timeless Hydraulic Civilization