00800cam a2200217 4500 pa 66000100 DLC 20260227111857.0 840504s1964 dcub i000 0 spa pa 66000100 DLC DLC DLC s-ec--- TC447 .P36 1964 333.91/15/0986632 19 Pan American Union. Department of Economic Affairs. Investigación de las posibilidades de desarrollo de la Cuenca del Río Guayas del Ecuador; evaluación integrada de los recursos naturales. Washington, Unión Panamericana, 1964. xv, 240 p. maps (6 fold. col. in pocket) 27 cm. Issued also in English. Water resources development Ecuador Guayas River Watershed. 51590 51590