TUESTA, RONALD PUERTA, DORIS ESENARRO, CESAR MINGA, CIRO RODRIGUEZ, and CARMEN AYLAS. 2021. “Open-Access Geographic Sources And Data For The Study And Management Of Natural Resources”. The Journal of Contemporary Issues in Business and Government 27 (3):849-57. https://cibgp.com/au/index.php/1323-6903/article/view/1676.