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standard and recommended practices
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ekon.
标准和推荐作法
Standard and Recommended Practices
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lotn.
标准及推荐措施
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标准和推荐实践
Standards and Recommended Practices
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lotn.
标准与推荐实例
国际民用航空组织出版的
standards and recommended practices
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lotn.
标准与推荐条款
Angielski tezaurus
Standards and Recommended Practices
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lotn.
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MichaelBurov
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