How to get multiple book ids xml feedback simultaneously

[Galih]

I am currently using below goodreads API;
https://www.goodreads.com/book/show.xml?
I am trying to mine data but my program seems taking a long time to mine since it has to access book ids' urls one by one.

That's why I wonder, can I access more than 1 book id in one time?

I only know how to do this with the json format in;
https://www.goodreads.com/book/review...?
by only seperating the isbns with coma but it doesn't seem to work the same way with this current xml api feedback I am working on.

Thank you