en.wikipedia.org/wiki/Design_theory 英語版 en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory 英語版 en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory theory en.wikipedia.org/wiki/Design_theory Design Theory en.wikipedia.org/wiki/Design_theory en.wikipedia.org/wiki/Design_theory http://en.wikipedia.org/wiki/Design_theory