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65 IS OBSOLETE ABSTRACT Continue abstract entered ADDRESS Office ADDRESS(if different Approved for public Block 20 block number COMPLETING FORM Continue on reverse CONTRACT OR GRANT CONTROLLING OFFICE NAME DD FORM DECLASSIFICATION/DOWNGRADING SCHEDULE 16 different from Controlling different from Report DISTRIBUTION STATEMENT distribution unlimited 17 EDITION entered in Block FORM 1 JAN GOVT ACCESSION GRANT NUMBER Hole Oceanographic Institution identify by block INSTRUCTIONS BEFORE COMPLETING internal waves KEY WORDS Continue magnetic Mid-Atlantic Ridge MONITORING AGENCY NAME NAME & ADDRESS(if NAME AND ADDRESS necessary and identify NUMBER OF PAGES NUMBER READ INSTRUCTIONS OBSOLETE S/N Oceanography Office of Naval PERFORMING ORGANIZATION NAME PROGRAM ELEMENT PROJECT public release RECIPIENT'S CATALOG NUMBER REPORT & PERIOD REPORT DOCUMENTATION REPORT NUMBER REPORT NUMBER READ reverse side SECURITY CLASSIFICATION sediment side if necessary SPONSORING MILITARY SUPPLEMENTARY NOTES 19 SUPPLEMENTARY NOTES Reprinted TASK AREA Technology Division Arlington TITLE and Subtitle TYPE OF REPORT Unclassified 15 Unclassified SECURITY CLASSIFICATION