TY - BOOK AU - Hobart,Michael E. AU - Schiffman,Zachary Sayre TI - Information ages: literacy, numeracy, and the computer revolution SN - 080185881X (alk. paper) U1 - 303.48/34 21 PY - 1998/// CY - Baltimore PB - Johns Hopkins University Press KW - Computers and civilization KW - Information technology N1 - Includes bibliographical references (p. [269]-294) and index ER -