TY  - BOOK
AU  - Brasch,Nicolas
TI  - Why do shadows change? and other questions about light and dark
SN  - 9780521137317
U1  - 535 
PY  - 2010///
CY  - Cambridge : 
PB  - Cambridge University Press, 
KW  - Light
KW  - Shades and shadows
ER  -