books نسبة عوامل الإنتاج المستخدمة
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# Energy used in production as well as transportation
# Cost of materials used in production
# Factors used
# Factors of Production Ratio
# What are the factors of production?
# Factors of production services in the economy
# production ratio
# Examples of factors of production
# Factors of abundance and diversity of production
# Factors affecting mineral production
# production and its factors
# On the factors affecting animal production
# Factors of Production Market
# income of factors of production
# Available from the factors of production
# The prices of the factors of production
# Factors of production rewards
# The percentage of alcohol in the production of beverages
# Products used
# Leather sections used in products
