Видео с ютуба Ajantha Pitadeniya
BST Practical | Extraction of papain from Papaya Fruit
Ceremonial Wedding - Sri Lanka Navy 2
Grafting | BST Practical | Sinhala Medium
Digital Thermometer | BST Practical | Item Identification 4
BST Practical | Production of Sauekraut by using Cabbage leaves | Sinhala
How to prepare a Double Layer Polythene Bag for transporting ornamental fish | BST Practical
Biosystems Technology | Spot Test | Spot Test No 5 - 2024
BST Practical | Identifying quality of EGG | Candling Machine | Technology | Sinhala Medium
BST Online Class Day 2 | How to use auto level | Surveying and Leveling | BST Practical
How to Plant a Sensaweria & Bigonia Leaf | BST Practical