A survey of 88 research libraries measuring staff involvement in key public service functions indicates that professional personnel are significantly more active in providing graduate library instruction, online searches, and reference service than paraprofessionals. When professional groups were compared, it was found that in those libraries employing both subject specialists and generalist reference librarians, the generalists were more responsible for online searching and reference selection and were only slightly less responsible than subject specialists in providing graduate library instruction. A copy of the questionnaire is included. (Author/RAA)