@book{1023,
	author = {NEANG, CHANNETH.},
	title = {effect of direct seeding mulch-based cropping system on phosphorus and potassium in the soil (ឥទ្ធិពលនៃប្រព័ន្ធដំាដុះលើដំណាំគំរបដីលើកំរិតផូស្វ័រ និង​ ប៉ូតាស្យូមក្នុងដី )},
	publisher = {RUA},
	year = {2010},
	address = {Phnom Penh}
}