NGAN HA, Nguyen.
 Assessment on Soil Environment and Vegetable Quality  of an Organic Farming Model at Trac Van Commune,  Duy Tien District, Ha Nam Province, Vietnam.
<strong>VNU Journal of Science: Earth and Environmental Sciences</strong>, [S.l.], v. 33, n. 1S, dec. 2017.
ISSN 2588-1094.
Available at: &lt;<a href="https://js.vnu.edu.vn/EES/article/view/4138" target="_new">https://js.vnu.edu.vn/EES/article/view/4138</a>&gt;. Date accessed: 24 nov. 2024.
doi: <a href="https://doi.org/10.25073/2588-1094/vnuees.4138">https://doi.org/10.25073/2588-1094/vnuees.4138</a>.