00426nam a22001457a 450000500170000001000130001702000260003003500130005603700220006908200110009110000150010224501010011726000380021830000240025620181206123451.0  aB-713034  a9780670921607c699.00  aB-713034  bPortfolio Penguin  a658.02  aRies, Eric  aThe lean startup:bhow constant innovation creates radically successful businessescby Eric Ries  aNew YorkbPortfolio Penguinc2011  a320 p.c24 cm(Pbk.)