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World International Property Organization
title
ISBN-13
(ISBN-10)
year of publication
Official Catchword Index to the Sixth Edition of the International Patent Classification
978-92-8O5-O549-8
(92-8O5-O549-1)
1994
I. P.
·
W.I.P.O
·
W.P.
·
World Organization
World Investment News Ltd.