Khalid Yassen Al-Zoubaidy; Abbas Abid Ahmed Al-Timimi
(University of Diyala / College of Agriculture, 2018-12)
In this research, the production and cost function of farms fish where conducted
from random sample included of (%19.4) of total fish breeders in Salah Al-Deen
governorate. The data were obtained by a questionnaire, for ...