William A. Conklin: Nature's Art
The Inner and Outer Dimensions of the Shell
Univ. of South Carolina Press, 1985
ISBN 0-87249-467-5
Good luck!
Masashi Yamaguchi
Faculty of Science
University of the Ryukyus
e-mail: [log in to unmask]http://www.cc.u-ryukyu.ac.jp/~coral/