00330nam a2200121Ia 450000500170000000800410001702000220005803500090008010000370008924500480012626000090017465000250018320251022063851.0251022s9999||||xx |||||||||||||| ||und||  a978 0 9827436 0 7  a1881  aBrant Cooper, Patrick Vlaskovits 0aEntrepreneurs Guide to Customer Development  cYear  aC-10:Popular Science