Hi Gana,
We've uploaded data from the e-resources module of our ILS (III millenium) into SubjectsPlus, but have never tried those sources. Can you give a URL of where the data you want can be found? If so, I can try to see how it might be ingested into SubjectsPlus. It would require XML, JSON, whatever from the source, and then you'd have to write a custom script to create the SQL to put this data into the correct fields in SubjectsPlus. This second part can be a bit tricky, but since we did something similar with ILS data, we have sort of a template already here at the University of Miami.
Andrew