Nguyen Thanh Giao , Truong Hoang Dan and Vuong Thi Giau Em. “Environmental Problems at The Yellow Snail Processing Households in Phung Hiep District, Hau Giang Province, Vietnam”. NIPES - Journal of Science and Technology Research, vol. 3, no. 2, June 2021, doi:10.37933/nipes/3.2.2021.2.