Method 1 If the library is open, please return your books at the counter. If the library is closed, use the return box located to the left of the entrance. Please note: Books cannot be returned to the Central Library. Method 2 You may also return books by courier or Letter Pack using a trackable delivery method to the address below. After sending, please notify the Mathematics Library by email with the expected arrival date and tracking number. (Please note that return shipping costs are the responsibility of the sender.) Address: Sophia University Mathematics Library Room 095, Basement Level 1, Building No. 4 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554 Tel: 03-3238-3382