TY  - BOOK
AU  - Thomson,J.
AU  - Turk,Walter Ernest
AU  - Beesley,M.J.
TI  - Frequency conversion
T2  - The Wykeham technological series
SN  - 0851090303
U1  - 621.381/5363 
PY  - 1969///
CY  - London
PB  - Wykeham Publications
KW  - Optoelectronic devices
KW  - Lasers
ER  -