Bich Hue, D. and Ngoc An, N. 2005. RESEARCH ON ENVIRONMENTAL ACTUALITY BY BIOLOGICAL RESOURCES EXPLOITATION AT DUC PHO DISTRICT, QUANG NGAI PROVINCE. Science and Technology Development Journal. 8, 2 (Feb. 2005), 50-58. DOI:https://doi.org/https://doi.org/10.32508/stdj.v8i2.2971.