Krog, D. R. (1989). A plant-process model for forecasting Iowa corn yields. Ames: Center for Agricultural and Rural Development. Iowa State University.
Παραπομπή Chicago StyleKrog, David R. A Plant-process Model for Forecasting Iowa Corn Yields. Ames: Center for Agricultural and Rural Development. Iowa State University, 1989.
Παραπομπή MLAKrog, David R. A Plant-process Model for Forecasting Iowa Corn Yields. Ames: Center for Agricultural and Rural Development. Iowa State University, 1989.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.