梅特兰观察到，法律文件是关于某一特定时期的经济和社会历史的最好的——事实上，往往是唯一可用的证据。
Maitland observed that legal documents are the best—indeed, often the only—available evidence about the economic and social history of a given period.
两个最近的文件（由伦敦经济学院的迪米特里沃亚诺斯和保罗伍利撰写）支持了威廉姆斯的意见。
Support for Mr Williams's case comes from two new papers* by DimitriVayanos and Paul Woolley at the London School of Economics.
届时双方还将签署农业、卫生、经济技术等领域的合作文件。
Cooperative documents in such areas as agriculture, health and economic technologies will be signed.
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