TY - CHAP T1 - Origins of polyploids T2 - Polyploidy, Biological Relevance Y1 - Submitted A1 - de Wet, J. M. J. ED - Lewis, Walter H. SP - 3 EP - 15 KW - INCOMPLETE KW - ORIGINS KW - POLYPLOIDY JF - Polyploidy, Biological Relevance PB - Plenum Press CY - New York and London ER -