%0 Generic %T 2020 census : challenges facing the Bureau for a modern, cost-effective survey : hearing before the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Fourteenth Congress, first session April 20, 2015. %U https://ezaccess.libraries.psu.edu/login?url=https://www.heinonline.org/HOL/Page?handle=hein.cbhear/fdsysamlz0001&id=1&size=2&collection=congrec&index=cbhear