text New York Appleton-Century- Crofts 1957 Ind 529p.: ill.; 24 cm. 529p.: ill.; 24 cm. Incl. Bibl. Index: p. 517-529 TECHNOLOGY and social change SOCIAL CHANGE TECHNOLOGY 301.15 301.15TEC INLIS000000000009981 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)