A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL. The file type is application/pdf.
application/pdf
"دراسة تحلیلیة لحساب حجم العینة الأمثل فی البحوث المیدانیة الزراعیة." المجلة المصریة للاقتصاد الزراعی 28.7 (2018) 485-502