International patent classification.
Форматы
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Полное описание
ЗаглавиеInternational patent classification.
Шифр
WIPO(092.1)/IN6
АвторыWIPO
ДатаGeneva : World Intellectual Property Organization, [197?]-
Примечания
Issued in 9 v.
Description based on: 4th ed. (1984).
Description based on: 4th ed. (1984).