Four approaches to risk and uncertainty for use in farm management extension

Bibliográfalaš dieđut
Váldodahkki: Calkins, Peter H. (Dahkki)
Materiálatiipa: Analytics
Giella:eaŋgalasgiella
Almmustuhtton: Tainan, Taiwan Office of Information Service, Asian Vegetable Research & Development Center 1976.
Ráidu:Technical bulletin / Asian Vegetable Research & Development Center no. 3
Fáttát: