@book{521,
	author = {TOYCH, VEASNA.},
	title = {Response of maize ( zea mays) to liming and phosphorus application on acid soil ​ការឆ្លើយតបនៃដំណាំពោតទៅនឹងការដាក់ជីផូស្វ័រ និងកំបោរនៅលើដីអាស៊ីត},
	publisher = {RUA},
	year = {2002},
	address = {Phnom Penh },
	url = {https://drive.google.com/file/d/1-YGILBISsBeXXkpIjUvpppOnnypRA_Gw/view?usp=sharing}
}