TY  - BOOK
AU  - Walsh, John,
TI  - Photometry
T2  - Dover books on physics and mathematical physics
U1  - 535 
PY  - 1965///
CY  - New York
PB  - Dover
KW  - FOTOMETRIA
KW  - OPTICA
KW  - LUZ
KW  - RADIACION
ER  -