1. High-resolution sidescan-sonar imagery of the Manchas Interiores- Manchas Exteriores coral reef complex, Mayaguez, Puerto Rico [microform] Yale Public content 1992. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. U.S. Dept. of the Interior, U.S. Geological Survey ; Books and Open-File Reports Section, distributor. English. Public. Caribbean Sea.