Published in Proceedings of the California Academy of Sciences, in 1994, in volume 48, issue 9, pages 171-183
Published in Proceedings of the California Academy of Sciences, in 1994, in volume 48, issue 10, pages 185-220
Published in Proceedings of the California Academy of Sciences, in 1994, in volume 48, issue 11, pages 221-237
Published in Proceedings of the California Academy of Sciences, in 1994, in volume 48, issue 12, pages 239-252