根据不同的记录手段和读取方式，不健康文献可以分为∶印刷型、缩微型、机读型和视听型等。
According to different record means and reading ways, they can be divided into: printed, micro formed, read on machine and audio-visual etc.
根据不同的记录手段和读取方式，不健康文献可以分为∶印刷型、缩微型、机读型和视听型等。
According to different record means and reading ways, they can be divided into: printed, micro formed, read on machine and audio-visual etc.
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