Introduction to the principles of plant taxonomy / edited by V.V. Sivarajan and N.K.P. Robson. Sivarajan, V. V. Robson, N. K. P. Plants Classification. QK95 .S58 1989 581.01 20 SII Includes bibliography and index. Bibliography: p. [223]-272. Cambridge : New York ; Cambridge University Press, c1991. c1991. 1991 Text xiv, 292 p. : http://www.loc.gov/catdir/description/cam024/89034314.html http://www.loc.gov/catdir/toc/cam029/89034314.html eng