Inventions and patents : an introduction to patent system

With special reference to Pakistan.

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书目详细资料
OCLC:2136938
主要作者: Toor, Mumtaz Ali, 1917-1977
语言:English
出版: Karachi : Toor, 1974.
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Monograph

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实物特征 Local Call Number 状态
75-930216 可用