The manual contains sections on: (1) Philosophy and Rationale, (2) The Network Relationship, (3) Verification, (4) Transmission Schedules, (5) Nebraska Union Catalog, (6) Denver Bibliographical Center for Research, (7) Technical Operating Procedures, (8) TWX Operation Including Instructions for Formats, (9) Sample Regional Library Request to NPLC, (10) Sample Regional Library Request to NPLC - Annotated, (11) Sample NPLC Answer to Regional Library, (12) List of Libraries Included in the Nebraska Union Catalog, (13) Interlibrary Loans, (14) Abbreviations, (15) The Model Code Adopted for NLA, (16) Appendix I (For Biomedical Requests), (17) Appendix II (Library Index to the Networks) and (18) Appendix III (Sample - Interlibrary Loan Control Forms). (MM)