تابع هزینه
منبع : سایت تخصصی علم اقتصاد
تابع هزینه
منبع : سایت تخصصی علم اقتصاد
O` Freedom !.... I hate oppression , I hate imprisonment , I hate the chains , I hate prisons , I hate Regimes (oppressors) , I hate orders and I hate whoever and anything that imprisons you ....