Series
- OAR3
- OAR (United States. Air Force. Office of Aerospace Research)1
- OAR (United States. Air Force. Office of Aerospace Research)3
- OARDC research bulletin ; 1184, October 19881
- OAS Official records. Ser1
- OAS official records49
- OAS official records ; OEA/ser. C/VIII (English)1
- OAS official records ; Ser.C/VI.19.11
- OAS official records. OEA/Ser1
- OAS report1
- OASC-101
- OAU (STRC scientific publications)1
- OAU/STRC publication4
- OAU/STRC scientific publications1
- OAU/STRC. Publication 991
- OCAT Cong shu1
- OCAT cong shu1
- OCC working paper5
- OCD publication ; 20221
- OCD technical report1