The Natural History of Nautilus. Peter Douglas Ward. Allen and Unwin, Winchester, MA, 1987. xiv, 267 pp., illus. $34.95; Nautilus. The Biology and Paleobiology of a Living Fossil. W. Bruce Saunders and Neil H. Landman, Eds. Plenum, New York, 1988. xxviii, 632 pp., illus., + plates. $95. Topics in Geobiology, vol. 6.
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