He tried the various almanacs, annuals and gazettes which were held in the library.
他试着在图书馆里找过各种历书、年鉴和报纸。
Patent gazettes and indexes, classifications and other literature in this field are also available.
在这里还可以获得专利公报和索引、分类和其他这个领域的文献。
Patent gazettes and indexes, classifications and other literature in this field are also available.
在这里还可以获得专利公报和索引、分类和其他这个领域的文献。
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