F. Valdez

A regional database management system—the fisheries resource information system and tools (FiRST): Its design, utility and future directions

Mudjekeewis D. Santos, K. N. Kurup, D. Pauly, 2006 .

Mexico ́ s National Map of Small Watersheds

E. Ventura, V. Sorani, M. Domínguez, 2005 .