TY  - BOOK
AU  - Birdsall, Derek
AU  - Cipolla, Carlo M.
TI  - Technology of man : a visual history
U1  - 609 
PY  - 1979///
CY  - London
PB  - Wildwood House
KW  - Light--Physiological effect
KW  - Structural Engineering
N1  - ENG
ER  -