Видео с ютуба Guru Gedara Bio System Technology

NIE Guru Gedara | A/L Bio System Technology - Lesson 01 - Tamil Medium - 2020.04.28 - 02.00PM

Guru Gedara | AL | Bio System Technology Sinhala

දැව නොවන වනජ නිෂ්පාදන ශිල්ප ක්‍රම - Lesson 07 -A/L Bio Systems Technology (ජෛව පද්ධති තාක්ෂණවේදය)

Guru Gedara | AL | Bio System Technology Sinhala | 2021 -09 -06

Gurugedara | A/L Bio System Technology | Sinhala Medium | 2020-06-08 | Educational Prog.

Guru Gedara A/L bio System Technology Tamil | 2020 -10 -25 |Rupavahini

Gurugedara | A/L Bio-system Technology Sinhala Medium 2020-06-22 | Educational Programme

අපජල පවිත්‍රණය - N 19 -A/L Bio Systems Technology (ජෛව පද්ධති තාක්ෂණවේදය) 12 ශ්‍රේණිය

NIE Guru Gedara | A/L Bio System Technology - Lesson 02 - Tamil Medium - 2020.04.28 - 03.00PM