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Jacobsen, N. H. G., primary and Koen, K. J., additional

Jacobsen, N. H. G., primary

Jacobsen, N. H. G., primary

HAACKE, W. D., primary, JACOBSEN, N. H. G., additional, HAAGNER, G. V., additional, BAARD, E. H. W., additional, SCOTT, A., additional, BOYCOTT, RICHARD C., additional, BAUER, A. M., additional, BRAACK, HAROLD H., additional, and BRANCH, WILLIAM R., additional

van der Merwe, Francois, primary, Heunis, Francois, additional, Steyn, Peter, additional, Reyer, Heinz-Ulrich, additional, Macdonald, M. A., additional, Watson, J., additional, Clark, A., additional, Wolff, S. W., additional, Jacobsen, N. H. G., additional, Dean, W. R. J., additional, Oatley, T. B., additional, Cruickshank, R. A., additional, and Earlé, R. A., additional

Jacobsen, W. B. G, primary and Jacobsen, N. H. G., additional

JACOBSEN, N. H. G., primary

Jacobsen, N. H. G, primary and Pienaar, U De V, additional

Jacobsen, W. B. G., primary and Jacobsen, N. H. G., additional

BROADLEY, D. G., primary, JACOBSEN, N. H. G., additional, HAACKE, W. D., additional, BATES, M. F., additional, JACOBSEN, N. H.G., additional, and NEWBERY, R. E., additional

Jacobsen, W. B. G, primary and Jacobsen, N. H. G., additional

GORDON, D. H., primary, HAACKE, W. D., additional, and JACOBSEN, N. H. G., additional

JACOBSEN, N. H. G., primary and NEWBERY, R. E., additional

JACOBSEN, N. H. G., primary