S.J. Pretorius

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V6SUND-00004

July 1, 1962

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July 1, 1962

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July 1, 1962

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July 1, 1962

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July 1, 1962

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July 1, 1962

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V2MOOI-00032

Aug. 1, 1961

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Aug. 1, 1961

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V2MHLO-00007

Aug. 1, 1961

20

Uploaded Source References

Published book, report or thesis

Water quality and abatement of pollution in Natal Rivers. Part II. Survey of the Three Rivers Region.

1967 P.A.J Brand, P.H. Kemp, S.J. Pretorius & H.J. Schoonbee

Published book, report or thesis

Water quality and abatement of pollution in Natal rivers. Part III. The Tugela River and its tributaries.

1967 P.A.J Brand, P.H. Kemp, W.D Oliff & S.J. Pretorius

Published book, report or thesis

Water quality and abatement of pollution in Natal rivers. Part IV. The rivers of Northern Natal and Zululand.

1969 C.G.M Archibold, O.J. Coetzee, P.H. Kemp, S.J. Pretorius & R.R. Sibbald

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