TY  - BOOK
AU  - Humphrey, John William
TI  - Ancient technology
SN  - 9780313327636
U1  - 609.3 HUM 
PY  - 2006///
CY  - Westport, Conn
PB  - Greenwood Press
KW  - Technology - History - To 1500
N1  - Includes bibliographical references (p. [195]-212) and index
ER  -