553. File 2794/1921 Pt 16 'Persian Gulf: Oil Bahrain. Calibration of Tanks and measurement of oil.' Date: 1934/1942 Language: English Geographic region: Bahrain
554. File 2794/1921 Pt 17 'Persian Gulf: oil; tables of quantities produced by Bahrain Petroleum Co Ltd' Date: 1934/1934 Language: English Geographic region: Bahrain
555. File 2794/1921 Pt 4 'Persian Gulf: oil: Bahrein.' Date: 1925/1930 Language: English Geographic region: Bahrain
556. File 2794/1921 Pt 6 'Persian Gulf: Oil - Bahrain (1933.)' Date: 1933/1933 Language: English Geographic region: Bahrain
557. File 2794/1921 Pt 6 'Persian Gulf: Oil: Bahrain' Date: 1933/1934 Language: English Geographic region: Bahrain
558. File 2794/1921 Pt 6 'Persian Gulf: Oil: Bahrain.' Date: 1931/1933 Language: English Geographic region: Bahrain
559. File 522/1922 Pt 2 'Bahrein: Passport arrangements for travellers between Bahrein and Persia; Position of Bahreinis in Persia' Date: 1923/1932 Language: English Geographic region: Bahrain
560. File 522/1922 Pt 1 'Persian Gulf: Bahrein affairs: Retirement of Shaikh Isa; Reforms' Date: 1922/1924 Language: English Geographic region: Bahrain
561. File 522/1922 Pt 3 'Bahrein: Persian claim to sovereignty' Date: 1922/1929 Language: English Geographic region: Bahrain
562. File 522/1922 Pt 4 'Persian Gulf: Bahrein: Internal' Date: 1924/1931 Language: English Geographic region: Bahrain
563. File 522/1922 Pt 5 'Persian Gulf: Bahrein: Administration: Internal Affairs: British Interference' Date: 1924/1931 Language: English Geographic region: Bahrain
564. File 522/1922 Pt 6 'Persian Gulf: Bahrain: Financial Adviser: Budget' Date: 1924/1931 Language: English Geographic region: Bahrain