එන්ජිමක සිසිලන පද්ධතියේ ක්‍රියාකාරිත්වය

URL ஐ திறப்பதற்கு இணைப்பு https://www.e-thaksalawa.moe.gov.lk/moodle/pluginfile.php/15505/mod_resource/content/1/chapter%252005.pdf ஐ சொடுக்குக