A library survey was conducted during February 1983 to ascertain the characteristics of the user population, user needs, and user satisfaction with library services in five science and technology libraries at the University of Texas at Austin, including the chemistry, engineering, geology, physics-mathematics-astronomy, and science libraries. A random sample of 900 users were given the survey as they entered one of the five libraries; a total of 680 surveys were completed. It was found that (1) the largest proportion of individuals entering the libraries were underclassmen and students; (2) over three-fourths of the users at each of the libraries visited the library weekly; (3) respondents used the libraries the most often to study their own materials, to obtain information for research and/or class assignments, and to photocopy materials; and (4) most users said they were usually able to find the materials they were seeking in the library. This publication describes survey methodology and results, with tables showing responses to each survey item. Other results reported are concerned with specific libraries used most often and time of library use. A sample questionnaire is also provided. (Author/ESR)