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letter of reference
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busin.
推荐函
econ.
调査信
;
推荐书
;
保存书
;
证明书
interntl.trade.
调查书
;
保证书
;
调查信
;
查询信
law
保证书证明信
securit.
推荐信
;
调查函
tech.
介绍信
textile
保荐书
;
证明信
letter of reference
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1 phrase
in 1 subject
Economics
1
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