effect of 1 liter of solution with different water rates on growth of ( Celery cabbage ) by hydroponics ឥទ្ធិពលនៃកម្រិតទឹកសូលុយស្យុង១លីត្រលាយជាមូយបរិមាណទឹកខុសៗគ្នាលើការលូតលាស់ដំណាំស្ពៃចង្កិះដាំតាមបច្ចេកទេស HYDROPONICS CHAN SEYHA ចាន់​ សីហា AGR CHA 2017 B646 Or.1 RUA Phnom penh 2017 2017 Text viii;22p https://drive.google.com/file/d/1VA3Uv3kEV8dfRZ4Eye5Z0wkXuE7q7G5D/view?usp=sharing