TY  - BOOK
AU  - TIMOTHY , D. H / HARVEY , P . H / DOWSWELL , C . R . 
TI  - DEVELOPMENT AND SPREAD OF IMPROVED MAIZE VARIETIES AND HYBRIDS IN DEVELOPING COUNTRIES
AV  - SB323.T5 1988 
PY  - 1988///
CY  - WASHINGTON
PB  - METROTEC , INC .
ER  -