J. L. Harper, B. R. Rosenand J. White(Eds.):The growth and form of modular organisms. Proceedings of a Royal Society discussion meeting held on 27 and 28 June 1985. The Royal Society, London, 1986. 250 pp., ill. Hard cover. £43.00 UK, £46.00 overseas. ISBN 0‐85403‐281‐9. (Phil. Trans. R. Soc. Lond. B. 313, No. 1159. 1–