@book{4270,
	author = {ROS, PHOURA.},
	title = {6-m3 biodigeter construction process and its effectiveness (ដំណើរការសាងសង់និងប្រសិទ្ធភាពឡជីវឧស្ម័នទំហំ៦ម៣)},
	publisher = {RUA},
	year = {2010},
	address = {Phnom Penh},
	url = {https://drive.google.com/file/d/1dwws1gC-km_AdP2mc_eOTVOieTdgdPY2/view?usp=sharing}
}