DEVELOPMENT AND SPREAD OF IMPROVED MAIZE VARIETIES AND HYBRIDS IN DEVELOPING COUNTRIES
TIMOTHY , D. H / HARVEY , P . H / DOWSWELL , C . R .
DEVELOPMENT AND SPREAD OF IMPROVED MAIZE VARIETIES AND HYBRIDS IN DEVELOPING COUNTRIES DAVID H . TIMOTHY / PAUL H . HARVEY / CHISTOPHER R . DOWSWELL . - WASHINGTON METROTEC , INC . 1988 - xi, 71p.;ill.: Hbk
SB323.T5 1988
DEVELOPMENT AND SPREAD OF IMPROVED MAIZE VARIETIES AND HYBRIDS IN DEVELOPING COUNTRIES DAVID H . TIMOTHY / PAUL H . HARVEY / CHISTOPHER R . DOWSWELL . - WASHINGTON METROTEC , INC . 1988 - xi, 71p.;ill.: Hbk
SB323.T5 1988