The polish patent information policy
1993 ◽
Vol 15
(2)
◽
pp. 89-102
◽
2007 ◽
Vol 29
(2)
◽
pp. 144-147
◽
Keyword(s):
1997 ◽
Vol 19
(2)
◽
pp. 87-92
◽
1992 ◽
Vol 14
(1)
◽
pp. 8-12
◽
Keyword(s):