Derk Haank , the science division's Amsterdam-based boss, spends an hour at a blackboard showing the company's ScienceDirect has put so much material at scientists' fingertips that cost-per-page-view has more than halved in the last three years.

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Derk Haank, the science division's Amsterdam-based boss, spends an hour at a blackboard proving that the company's Sciencedirect.com has put so much material at scientists' fingertips that the cost per page view has been cut by more than half in the past three years.

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