International patent classification.
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).