text Chicester John Wiley & Sons 1978 xii, 234 p. ill ; 23 cm UMBI-UMBIAN CASSAVA SWEET POTATO COCOYAMNS YAMS 633-4 633-4 INLIS000000000004778 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)