An escalation in the use of non-book materials in the library at the University of Bath created the need for an evaluation of their uses, learning efficiency, and cost effectiveness. Data were collected during 1976-1977 using observations, short and long questionnaires, free responses, group interviews with students, and cost analysis. All information collected from the questionnaires, interviews, and free responses was transferred to cards indicating the name of the originator of materials, the number sequence of the student, type of response, and the material. Cost analysis was conducted by calculating the cost of providing the materials for which a cost for each use could be determined. Findings are reported on (1) the use of study packs, videocartridges, slide/tape, and microfiche by both lecturers and students in various academic departments; (2) Student reactions to study packs and video cartridges, based on feedback from students either in writing or during interviews concerning how the materials were used, the loan period, the basis of provision, where they were used, and access to them in the library; (3) feedback to lecturers and the library; and (4) cost analysis. Conclusions and recommendations are divided into the areas of proposed research, research strategies, the system that was investigated, and suggestions for further work. The study is supported by numerous tables and graphs and a copy of the questionnaire evaluation form is included. (JPF)