But the dominant factor is distribution, and animal proteins.

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The second long-term factor was the shift in the distribution of income.

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With intense competition, and the similar nature of products offered by various companies, distribution is the most important factor affecting penetration.

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However, according to the report, distribution is far and away the most important factor and that should be comforting to publishers because, at this point, established publishers are the only reliable path into bricks-and-mortar bookstores, where a large proportion of sales are still made.

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