Bull, Geoffrey T 1921- God holds the key ; being a record of his meditations and reflections centring [sic.] on the period of his imprisonment in China, October 1950 to December 1953, by Geoffrey T. Bull. - London, Hodder and Stoughton [1959] - 254 p. 21 cm. LCCN: 59002267 Subjects--Topical Terms: Missionaries--Correspondence.Meditations. LC Class. No.: 248.48 / B935G Dewey Class. No.: 248.48 / B935G