Greetings,
I have been lurking in this list for a while. Thanks for all the valuable 
information.
The first year I was keeping bees, I made a calculation mistake and fed the bees 
more than a double dose of oxalic acid.
The bees survived the winter with great loss. There was a big heap of dead bees 
on the bottom board on both my hives.
One of the queens survived the next year but the other was superceded very soon 
in the summer.
This is the information I can give.
Regards
Kamil

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