| http://www.w3.org/ns/prov#value | - The economist, Edwin R. A. Seligman, described it nicely in 1889, ???Economics is a social science, i.e., it is an ethical and therefore an historical science???.It is not a natural science, and therefore not an exact or purely abstract science.??? After Alfred Marshall published a textbook in 1890, the term ???economics??? began to replace ???political economy??? and the term has now disappeared
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