Iskani niz je bil najden v IZTOČNICAH:
IBS
EMPLOYMENT AND WORKING CONDITIONS
da
Internationalt Fagsekretariat
de
IBS
,
Internationales Berufssekretariat
en
ITS
,
International Trade Secretariat
es
SPI
,
Secretariado Profesional Internacional
fr
SPI
,
Secrétariat Professionnel International
it
SPI
,
Sindacato Professionale Internazionale
nl
Internationaal Beroepssecretariaat