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An unusual "vesicular" ironstone (nzegite) from the Nyanzian system of Tanganyika / by J.R.F. Handley.
- East-Central regional committee for geology,
- 1956.
- Dar-es-Salaam :
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Banded ironstones and associated rocks / by J.R.F. Handley.
- East-Central regional committee for geology,
- 1956.
- Dar-es-Salaam :