00422nam a22001457i 4500001001000000005001700010008004100027082002200068100002000090245006200110250001000172260005600182300001700238650002100255SXC02715720260819093816.0260101s2004    ii            000 0 eng d  a580.12 GUR-P2222  aGurcharan Singh10aPlant systematics: Theory and practice /cGurcharan Singh  a2 ed.  abOxford & IBH Publishing Company, New Delhi,c2004  ap. ;c22 cm. 0aTaxonomy; Botany