- General inquiries
- Tel: +49 421 200-4601
irc-library@constructor.university - Borrowing & circulation
- Tel: +49 421 200-4617
irc-circulation@constructor.university - Interlibrary loan
- Tel: +49 421 200-4617
irc-ill@constructor.university - Acquisitions
- Tel: +49 421 200-4616
irc-acquisitions@constructor.university - Dissertations
- Tel: +49 421 200-4616
irc-dissertation@constructor.university - Multimedia
- Tel: +49 421 200-4613
irc-multimedia@constructor.university