About PAMAN Ujang
About Riau Islamic Univ., Riau, IDN
About INABA Shigeki
About Saga Univ., Saga, JPN
About UCHIDA Susumu
About Saga Univ., Saga, JPN
About 農業食料工学会誌
About power tiller
About rotary tiller
About operation performance
About operating cost
About profit
About character(group theory)
About break-even point
About comparison
About performance evaluation
About agriculture
About farmer
About cultivation
About Republic of Indonesia
About Indonesia
About cost comparison
About rice crop
About operation cost
About economic benefit
About smallholder farmers
About performance comparative
About profitability
About Agricultural machines and facilities in general
About Agricultural economy,agricultural management
About インドネシア
About 小規模
About 耕うん機
About 経済
About 機能的評価