1. Boca del Orinoco South America 1:1,000,000 / [cartographic material] Yale Public content 1942. 2006-09-29T14:31:04Z. 2011-03-04T01:17:07Z. American Geographical Society of New York. American Geographical Society of New York. English&Spanish. Public. Venezuela, Orinoco River Delta, Orinoco River Delta (Venezuela), and South America.