/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: jorisstumpel https://cdn.slidesharecdn.com/profile-photo-jorisstumpel-48x48.jpg?cb=1523388171 - Kwantitatief & kwalitatief marktonderzoek - Project management - Recruitment http://www.thiememeulenhoff.nl