Good. cover rub marks, scrape marks and scratches. edge and corner chips and wear. page edge discoloring and light foxing. no marks on text or illustrations. staple bound pamphlet. 56 p. Contains: Unspecified. Audience: General/trade. With a reasonable investment in time and effort the average person can become a good all-round F&S (flaps and seals) operator in investigative work. This does not mean to say that the average person should undertake surreptitious entries of highly protected items of mail with the level of training outlined in the following. Only persons who specialize in that type of activity should attempt that. Nevertheless, the greater part of clandestine mail intercept work will involve surreptitious entries into mail that can readily be manipulated by the methods outlined in the following. There are three basic factors that must be observed in this work. They are: Carefulness, Cleanliness, Skill.
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