(1961). Economics of watershed planning. Ames, Iowa: The lowa State University Press.
Trích dẫn kiểu ChicagoEconomics of Watershed Planning. Ames, Iowa: The lowa State University Press, 1961.
ציטוט MLAEconomics of Watershed Planning. Ames, Iowa: The lowa State University Press, 1961.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.