@book{7049,
	author = {HENG NARIN ; ហេង ណារិន},
	title = {Effect of different rates of urea fertilzer on celerycabbage , ឥទ្ធិពលនៃបរិមាណជីអ៊ុយរ៉េខុសៗគ្នាទៅលើដំណំាស្ពៃចង្កឹះ},
	publisher = {RUA},
	year = {2014},
	address = {Phnom Penh},
	url = {https://drive.google.com/file/d/1kkUjylUHEWKvlaOjryoPwqL4CexIitMb/view?usp=sharing}
}