@book{4515,
	author = {HONG, CHHUN.},
	title = {Wheel trach effects on tillage draght, ឥទ្ធិពលនៃដានកង់ត្រាក់ទ័រទៅលើកម្លៃងភ្ជរ},
	publisher = {RUA},
	year = {2001},
	address = {Phnom Penh}
}