Seed potato systems in Ecuador: a case study text Lima, Peru International Potato Center 1989 Ind 70 p. : ill. ; 28 cm. 70 p. : ill. ; 28 cm. Bibl. p. 47-49 CRISSMAN, Charles C. SEED POTATOES ECUADOR 635.21-153.1(866) 635.21-53CRIs INLIS000000000002986 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)