The boot disks will only contain the essentials; command.com, the boot loader, etc.
Stuff it won't contain are all the utilities, such as MORE, FIND, etc.
I don't know how MS made the multiple languages of DOS, but it is feasible that you could take the core files from a English Boot disk and use the utilities from your foreign version; whether it will actually work I couldn't say.
Also- I looked it up, and I was wrong, DOS 6.22 was actually 4 floppies. (not that it matters, but I thought I'd correct myself anyway)
Google searches might help you find some Disc images; the trouble then would be getting it onto a CD...