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prices of related goods, consumers' income, consumers' preferences, advertisement situation, expectations, income distribution, climatic situations, etc. should not change.

2007-01-29 00:45:48 · answer #1 · answered by Chandra 2 · 0 0

Food, clothing, and shelter.

2007-01-29 08:41:48 · answer #2 · answered by stringer_G 3 · 0 0

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