SON, Nguyen Lan Hung; 						HOA, Nguyen Thi; 						DUNG, Le Trung.
 Composition of bird species in Huu Lien Nature Reserve, Lang Son province.
<strong>VNU Journal of Science: Earth and Environmental Sciences</strong>, [S.l.], v. 27, n. 1, mar. 2011.
ISSN 2588-1094.
Available at: &lt;<a href="https://js.vnu.edu.vn/EES/article/view/1496" target="_new">https://js.vnu.edu.vn/EES/article/view/1496</a>&gt;. Date accessed: 22 nov. 2024.