اذا لم تجد ما تبحث عنه يمكنك استخدام كلمات أكثر دقة.
Author: Sumner, William Graham, 1840-1910
Title: What Social Classes Owe to Each Other
Language: English
LoC Class: HN: Social sciences: Social history and conditions, Social problems
Subject: Economics
Subject: Social ethics
Release Date: Jun 16, 2006
Copyright Status: Public domain in the USA.
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