Federation of Rhodesia and Nyasaland.
Rhodesia and Nyasaland.Federal Department of Trigonometrical and Topographical Surveys.
Salisbury : Federal Dept. of Trigonometrical and Topographical Surveys,
1962-63.
Interfiled with later Republic of Zambia, ZS 41 sheets (graphic index in central file).
Covers mainly western Zambia only.