@book{20039,
	author = {BOREY DAVIN.បុរី ដាវីន},
	title = {effect of diffrent rates of nitrogen on growth and tield of bok choy (brassica rape Chinese)},
	publisher = {RUA },
	year = {2019},
	address = {PHNOM PENH },
	url = {https://drive.google.com/file/d/1HoKe39Es1SYJ36buvLbdfLstxAmoWi4F/view?usp=sharing}
}