@book{4238,
	author = {DUCH, SAMON.},
	title = {Study on manual weeder and its tillage in rice field, ការសិក្សាលើឧបករណ៍សំអាតស្មៅនិងជ្រួយបំផុសដីក្នុងស្រែ},
	publisher = {RUA},
	year = {2009},
	address = {Phnom Penh},
	url = {https://drive.google.com/file/d/1R77Z5EzsuK0NAOpF1sTI7eEopxphxNXR/view?usp=sharing}
}