Research methods and a comparative analysis of quantitative results of a study of the adequacy of collections and efficiency of reference services in 25 New Jersey public and county libraries are presented. Methods include use of a prepared bibliography on paleontology and a test question, both designed to be asked of reference librarians by "regular" users. Also included are a review of the literature on collection and reference service adequacy, a brief history and description of the New Jersey library network, several tables comparing library collections at the libraries studied, procedures and sources for the compilation of the bibliography and formation of the test question, and study results. Appendices include a list of the names and addresses of the included libraries, selection aids consulted for the bibliography, and the bibliography itself. (MBR)