TE Document delivery

UP Documentation centres

UP Information analysis centres

UP Information centres

UP Information units

UP Referral services

UP Centre de documentation

UP Centre de traitement de l'information

UP Centre d'information

UP Centre d'orientation

UP Service d'aiguillage

UP Unité d'information

UP Centro de análisis de información

UP Centro de documentación

UP Centro de información

UP Centro de orientación

UP Centro de tratamiento de la información

TR Bibliographic services

TR Clearing houses

TR Special libraries

TR Selective dissemination of information

TR Data centres

TR Reference services