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- Organization for the Advancement of Structured Information Standards
- Operational Activities Special Information Systems
- OEX Autonomous Supporting Instrumentation System
- Oceanic and Atmospheric Scientific Information System
- Office Automation and Systems Improvement Standards
- Objective Assessment of Skills in Intraocular Surgery
- Observational Arthritis Study in Seniors
- Obstetric Anesthesia Safety Improvement Study
- Ocean and Atmospheric Sounding Interferometer System
- Office Of Arts And Sciences Information Services
- On-Line Asperger Syndrome Information and Support
- Online Academic Student Information System
- Observation at Several Interacting Scales
- Ocean Acquisition System For Interdisciplinary Science
- Oceanic and Atmospheric Scientific Information Systems
- On-line Archive Science Information Services
tác giả
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