French, Michael. Invention and evolution : design in nature and engineering / Michael French. - 2nd ed. - Cambridge: Cambridge University Press, 1994. - xx,367p.: ill.; 26cm. Includes bibliographical references (p.358-361) and index. ISBN: 0521465036 (hardback) 0521469112 (paperback) Subjects--Topical Terms: Engineering design.Structueal design.Nature (Aesthetics) LC Class. No.: TA174 / F74 1994