O
| OBRADOIRO
| 0211-6065 | B. CENTRAL | 1978-1979,1981(1983-1984)1985,1987-1990(1991)1992-1995(1996,1998)- |
| OBRADOIRO
REVISTA DE ARQUITECTURA E URBANISMO | 0211-6065 | EUFP EXB - OURENSE | 1978-1979(1981)1987-1988,1990-1991(1992)1993(1995)1996-1997- |
| OBRADOIRO DE HISTORIA MODERNA
| 1133-0481 | B. FACULTADES - OURENSE | |
| OBSERVATORIO DE RELACIONES INDUSTRIALES
| 1138-4956 | EUE EMPRESARIAIS - VIGO | 1997-1998- |
| OCCASIONAL PAPER
| FAC. CCEE E EMPRESARIAIS | (1983,1985-1987)1988-1989(1990-1991),1993-1995(1996)1997- | |
| OCEANOLOGICA ACTA
REVUE EUROPEENNE D'OCEANOLOGIE = EUROPEAN JOURNAL OF OCEANOLOGY | 0399-1784 | FAC. CIENCIAS | 1993- |
| OEBALIA
INTERNATIONAL JOURNAL OF MARINE BIOLOGY AND OCEANOGRAPHY | 0392-6613 | FAC. CIENCIAS | 1985- |
| OECD ECONOMIC OUTLOOK
= PERSPECTIVES ECONONOMIQUES OCDE | 0474-5574 | FAC. CCEE E EMPRESARIAIS | (1981-1982)1983-1984,1986- |
| OECD ECONOMIC STUDIES
| 0255-0822 | FAC. CCEE E EMPRESARIAIS | (1985)1986- |
| OECD ECONOMIC SURVEYS
| 0376-6438 | FAC. CCEE E EMPRESARIAIS | 1986- |
| OECD ENVIRONMENTAL DATA = DONNEES OCDE SUR L`ENVIRONNEMENT
| 1015-0293 | FAC. CCEE E EMPRESARIAIS | 1989- |
| OECOLOGIA
| 0029-8549 | FAC. CIENCIAS | 1997- |
| OECOLOGIA AQUATICA
| 0210-9352 | FAC. CIENCIAS | (1998) |
| OIKOS : JOURNAL OF ECOLOGY
JOURNAL OF ECOLOGY | 0030-1299 | FAC. CIENCIAS | (1989)1993- |
| OLEA EUROPAEA
BOLETIN DO DEPARTAMENTO DE PATRIMONIO HISTORICO E MEDIO AMBIENTE DO CONCELLO DE VIGO | 1134-2617 | B. CENTRAL | 1994(1995)- |
| OMEGA : THE INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
THE INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE | 0305-0483 | FAC. CCEE E EMPRESARIAIS | 1983(1984-1985)1986(1987)1988- |
| ON DISEŅO
| 0210-2080 | FAC. BELAS ARTES | 1992-1998- |
| OPERA ACTUAL
| 1133-4134 | B. CENTRAL | (1997)1998 |
| OPERATING SYSTEMS REVIEW
SIGOPS | 0163-5960 | ETSE INDUSTRIAIS | (1979)1980-1983(1984)1985,1988-1995- |
| OPERATIONS RESEARCH
| 0030-364X | ETSE INDUSTRIAIS | (1978,1984)1988-1995- |
| OPTICAL AND QUANTUM ELECTRONICS
CONT. DE: OPTO-ELECTRONICS | 0306-8919 | ETSE TELECOMUNICACION | 1980-1988,1992-1997(1998)- |
| OPTICAL ENGINEERING
THE JOURNAL OF SPIE. REPORTING ON RESEARCH AND DEVELOPMENT IN OPTICAL SCIENCE AND ENGINEERING | 0091-3286 | ETSE INDUSTRIAIS | 1985-1995- |
| OPTICS AND LASER TECHNOLOGY
| 0030-3992 | ETSE INDUSTRIAIS | (1997)- |
| OPTICS AND LASERS IN ENGINEERING
AN INTERNATIONAL JOURNAL | 0143-8166 | ETSE INDUSTRIAIS | 1985-1986,1988-1995- |
| OPTICS AND PHOTONICS NEWS
| 1047-6938 | ETSE INDUSTRIAIS | (1990)1991(1995)- |
| OPTICS LETTERS
| 0146-9592 | ETSE INDUSTRIAIS | 1980-1995- |
| ORGANIZACION Y GESTION EDUCATIVA
| 1134-0312 | EUFP EXB - OURENSE | 1993-1994(1995)1997-1998 |
| ORIENTACION ECONOMICA Y FINANCIERA
| 0212-7385 | FAC. CCEE E EMPRESARIAIS | (1987)1988-1989(1990)1991- |
| ORIENTATION SCOLAIRE ET PROFESSIONNELLE, L'
| 0249-6739 | B. FACULTADES - OURENSE | 1997-1998- |
| ORSIS
ORGANISMES I SISTEMES: REVISTA DE BOTANICA, ZOOLOGIA Y ECOLOGIA | 0213-4039 | FAC. CIENCIAS | 1985- |
| OTTAGONO : TRIMESTRALE DI DISEGNO INDUSTRIALE
TRIMESTRALE DI DISEGNO INDUSTRIALE | 0391-7487 | EUFP EXB - PONTEVEDRA | 1991- |
| OTTAGONO : TRIMESTRALE DI DISEGNO INDUSTRIALE
TRIMESTRALE DI DISEGNO INDUSTRIALE | 0391-7487 | EUFP EXB - OURENSE | 1992-1995(1996-1997)- |
| OXFORD ECONOMIC PAPERS
| 0030-7653 | FAC. CCEE E EMPRESARIAIS | 1980- |
| OXFORD JOURNAL OF ARCHAEOLOGY
| 0262-5253 | B. FACULTADES - OURENSE | 1997-1998- |