TY  - BOOK
AU  - Held, Richard
AU  - 
TI  - Image, object and illusion
U1  - 535-5 
PY  - 1971///
CY  - Sanfrancisco
PB  - W H Freeman
KW  - Light
KW  - Photometry
KW  - Optics
KW  - Colour
KW  - Optical storage devices
KW  - Spectrum analysis
KW  - Phosphoresence
KW  - Spectroscopy
KW  - Physics
KW  - Image processing
ER  -