TY - BOOK AU - Plucknett,D.L. TI - Trop. root & tuber crops tomorrow.Proc.2nd Int.Symp.on trop.root & tuber crops,23-30/8/70,Hawaii PY - 0000///s.d PB - College of Trop. Agr., Univ.of Hawaii,Vol.I,171pp. ER -