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Notice
Where sources known to be covered by registered copyright have been quoted in this book, the name of the copyright owner is included in the reference. Any omissions are unintentional and do not affect the validity of the copyright.
The identification (in writing, in photographs, or in drawings) of items of equipment by trademarks or by manufacturer’s name is for historical accuracy only and does not constitute an endorsement by the U.S. Government of the equipment or the manufacturer.
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