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You can expand your search to seeing what is in "all CUNY" libraries, yet the example below shows when you just search for a print book that is on the shelves at Hunter's libraries. Also note this example shows a book that is at the Silberman campus, on E 119 and Third Avenue.
As long as it's a "regular loan" book that is in the "stacks" (the shelves), you can request a print book from another CUNY library.
Note the call number (the location of the book) and look up where the first letter (H, in this case) corresponds to the floor maps in the library. Be sure the location corresponds with the branch library (Cooperman; Silberman; Zabar Art Library; Health Professions Library).
You can limit your search to both full e-books as well as e-book chapters. The following example is just searching e-books at Hunter but you can also try expanding your search to all of CUNY. Note that Hunter students do not necessarily have access to all e-books available at other CUNY libraries.