What is the appropriate data structure for a list of books, their authors, and publication dates?

Q1: I need a data structure suitable for the above description
Q2: Is there someway I can automate conversion from Excel cells into a
GWT readable format?

I have an Excel file containing close to 250 entries of Books with
their authors and publication dates.

I was thinking of using a table data structure, but I recognized that
there are other data structures that may help (database?).

Any help is appreciated. Thanks!

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