If a book is out on loan, you can make a reservation directly in WUR Library Search. Use the blue "Get it!" button, then click on the link "Submit a copy or loan request for this book". Reserving of books is free of charge. You cannot reserve books that are not out on loan.
Books for WUR staff will be sent to their office. Students will receive an email as soon as the reserved book is available for pick-up at the Library. You have seven days to pick up the requested item.
See for more info Borrowing.