OAPEC News Bulletin 1975-1985

The OECD Observer 1980-1981

OPEC Bulletin 1980-1994

Organization of The Petroleum Exporting Countries Annual Report 1979-1984

Oberheinische Geologische Abhandlungen 1963-1985

L’Observateur de L’OCDE 1965-1980

Ocean Construction Report 1977-1983

Ocean Devlopment and International Law 1973-1976

Ocean Energy 1975-1978

Ocean Management 1973-1981

Ocean Technology and Engineering 1974-1985

Oceanic Abstracts 1979-1985

Oceanologica Acta 1978-1985

Oceanology=Undersea Technology and Oceanology International Offshore Technology 1971-1972

Del u Kohle=Erdöl u Kohle

Offshore 1971-1992

Offshore Engineer 1977-1986

Ofioliti 1982-2000

Ogneupor 1939-1966

Oil and Gas Journal 1936-2000

Oil and Gas Science And Technology=Revue de L’Instıtut Français Du Petrole 1999-2000

Oil and Petroleum Year Book 1936-1949

Oil Forum=International Oilman

The Oil Weekly 1937-1947

Oklahoma Geology Notes 1962-1981

Ore Forming Processes and Mineral Deposits=Rudoobrazuvatelni Procesi I Mineralni Nahodista 1974-1991

Organic Geochemistry 1977-1987

L’Organisation 1938-1940

Orman ve Av 1940-1951

ODTÜ Haber Bülteni 1975-1977

ODTÜ Mimarlık Fakültesi Dergisi 1975-1976

ODTÜ Uygulamalı Araştırmalar Dergisi 1985

ODTÜ Müh.Fak.Yüksek Lisans Tez Çalışmaları Özetleri 1972

ODTÜ Temel ve Uygulamalı Bilimler Dergisi=Middle East Technical University Journal of Pure and Applied Sciences 1972-1980

Ortalama ve Ekstrem Kıymetler Meteoroloji Bülteni 1950-1974

Osterreichische Chemiker-Zeitung 1947-1952

Otecestvennaya Geologiya=Sovetskaya Geologiya 1993

The Overseas Engineer 1940-1961

Overseas Geology and Mineral Resources 1958-1982

Oxidation of Metals 1977-1988

Osterreiches Montan-Handbuch 1970-1987