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REPORT NUMBERING SYSTEM- The numbering of technical proiect reports issued-by the Naval Air Development Center is arranged for specific identification purposes. Each number consists of the Center acronym, the calendar yeai in which the number was assigned, the sequence number of the report within the specific calendar year, and the official 2-dgit correspondence code of the Command Office or the Functional Directorate responsible for the report. For example Report No. NADC-78015-20 indicates the fifteeth Center report for the year 1978, and prepared by the Systems Directorate. The numerical codes am as follows