Report on tour abroad, July-December, 1952
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The object of this tour was to study ore deposits and methods of exploration in Africa and North America as well as to attend, as Official Delegate of the Commonwealth of...
本次考察的目标为研究非洲与北美地区的矿床及其勘探方法，同时以英联邦（Commonwealth）官方代表的身份出席……
