Data from 16 university libraries in Indonesia, Malaysia, the Philippines, Singapore, and Thailand are used to determine, but not evaluate, the variety and extent of library services offered by ASEAN university libraries in the context of their organizational operating modes. These libraries, representing 80 percent of those queried, responded to a survey questionnaire seeking basic statistical and administrative information and answers to questions designed to elicit the relative degree of centralization in the library system. Survey results are presented concerning collections, services, duplication of resources, accessibility, staffing, and funding, with answers to open-ended questions providing a subjective view of each libraries' administrative organization. The survey concludes with 17 findings that develop a continuum of centralized/decentralized operation. The survey questionnaire and four references are included. (RAA)