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== Definitions ==

(dated) red ink on yellow paper. By [[HCO_CONTINENTAL_SECRETARY|HCO Continental Secretary]] of any continent. Distributed as designated on letter. Gives technical advices, orders and [[DATA|data]]. Not a [[COPY|copy]] of [[HCO|HCO]] Bulletins through these may be quoted.
''(HCO PL 4 Feb 61)''