TY  - BK
AU  - Brown,D.M.
TI  - Heat units for corn in Southern Ontario
U1  - 77-176158 
PY  - 1975///
CY  - Ottawa (Canada)
PB  - Ministry of Agriculture and Food, Ontario, 
KW  - Canada
KW  - Maize
KW  - AGROVOC
KW  - Plant production
KW  - Zea mays
ER  -