Contingency Design White Paper
37signals: Contingency Design White Paper
http://www.37signals.com/whitepaper/
レポート (無料) がPDFでダウンロードできます (↓)。
Contingency Design: Maximizing Online Profitability By Helping People When Things Go Wrong
http://www.37signals.com/whitepaper/37s_contingency_wp_feb02.pdf
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