机读格式显示(MARC)

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• 245 00 |a Chemical patents index, alerting abstracts bulletin (classified). |n J, |p Chemical engineering.

• 246 30 |a Chemical patents index. J, Chemical engineering

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• 260 __ |a London, GBR : |b Derwent Publications Ltd., |c 1989-

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• 650 _0 |a Chemical engineering |x Patents |v Periodicals.

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