Published in Nuytsia, in 1979, in volume 2, issue 6, pages 336-340

Published in Nuytsia, in 1979, in volume 2, issue 6, pages 341-353

Published in Nuytsia, in 1979, in volume 2, issue 6, pages 354-367

Published in Nuytsia, in 1979, in volume 2, issue 6, pages 368-374

Published in Nuytsia, in 1979, in volume 2, issue 6, pages 375-377