About O'NEAL M R
About Purdue Univ., Indiana
About FRANKENBERGER J R
About Purdue Univ., Indiana
About ESS D R
About Purdue Univ., Indiana
About GRANT R H
About Purdue Univ., Indiana
About Transactions of the ASAE (American Society of Agricultural Engineers)
About amount of rainfall
About climatic data
About Agricultural meteorology
About 作物生育
About 降水量
About 農場
About 規模