What does ETSO stand for?

Extended Time Sharing Option (Roscoe)

This definition appears very rarely

Other Resources:

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Escuela Técnica Superior de Ingenieros Industriales de Gijón Education and Training Sector Improvement Program (Namibia) Escuela Técnica Superior de Ingenieros de Telecomunicación Enhanced Tactical Simulation Interface Unit (DBST Component) Elite Team of Science Nerds Seaman, Electronics Technician Striker (Naval Rating) East Texas Symphony Orchestra (Tyler, TX) Employee Transportation Services Office European Technical Standard Orders European Transmission System Operators		Educational Technology Strategic Planning (University of Colorado at Boulder) Entitled To Severance Pay Environmental Technologies and Sustainable Practices Eurasian Tree Sparrow Evaluation of Testing in Schools Project (UK) Extension and Training Support Project (forestry and agriculture; Vietnam) Early Traumatic Stress Response (mental health diagnostic tool) Effort To Software Release Energy Technologies Status Report (California Energy Commission; Sacramento, CA) Electronic Telecommunications Switching System