Hugo Janse van Rensburg
[ Ph.D. Geohydrology (UFS), MBL (UNISA) ]

5 Binga Place
Faerie Glen, Pretoria

P.O. Box 1490
Faerie Glen
PRETORIA 0043, South Africa

Tel. No.:+27 82 784-2023
Fax. No.:+27 866843449
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Japie van Blerk
[Ph.D. Geohydrology (UFS)]

109 Bosduif Crescent
Wierdapark x1

P.O. Box 51777
Wierdapark
CENTURION 0149, South Africa

Tel. No.:+27 (12) 654 0212
Fax. No.:+27 866896006
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