TY  - BOOK
AU  - Wright,R.Thomas
TI  - Technology systems
SN  - 978-0870068962
AV  - T 47 .W74 1992
U1  - 600 20
PY  - 1992///
CY  - South Holland, Ill.
PB  - Goodheart-Willcox Co.
KW  - Technology
N1  - Includes index
ER  -