TY  - BOOK
AU  - Gies,Frances
AU  - Gies,Joseph
TI  - Cathedral, forge, and waterwheel: technology and invention in the Middle Ages
SN  - 0-06-016590-1
PY  - 1994///
CY  - New York
PB  - HarperCollins Publishers
N1  - Бібліогр. : с. 329-343, Покажчик
ER  -