Hi Massimo,
when we speak about La-7 era, it should be better to speak about Czechoslovak La-7.
There is a typo at the beginning of the text at
http://massimotessitori.altervista.org/sovietwarplanes/pages/la-7/la-7colors/czech/czech.htm. Correctly should be "
1st Ceskoslovenska Samostatna Smisena Letecka Divize (1 Czechoslovak Independant Combined Air Division)"
"Smisena" means mixed/combined.
When will your La-7 pages go public? I would post the link at Czech modelforum, some intersting comments would surely come from there.
Regards,
66misos