Add SVN subset to the main superset

Hi there,

I like to use SVN for my documents and backup my data. In major I use my
USB-Stick for this which has a repository, but once a week I want to give
all the revisions / commits (not only the head) made on the stick to a major
repository.

How do I do that?

--
In detail:
I have a major repository on a big external drive. And a latest subset on my
stick always with me.
If the stick runs full I delete everything and get the 10 latest revisions:
"svnadmin dump -revision 90:100 > Latest.dump" (if 100 is the HEAD)
"svnadmin create MyRepository"
"svnadmin load MyRepository < Latest.dump"
And I update and commit only on stick for a week (lets say my head-revision
will be 120 then).
At weekend I like to give those commits made on the stick to the main
repository on the external.
What will be the command for it?
greetings