There are no markings. Purchased and read to obtain PDUs for PMP certification. Please understand that this is a used and cut book before purchasing. No pets, no smoking. Cancellations and returns are not accepted to prevent product substitution. Thank you. A book explaining versatile business skills effective for all industries and business types. - Title: Kaizen Thinking - Author: Takahiro Kawagoe - Price: 1,500 yen - ISBN: 978-4-7745-1994-4 Thank you for viewing.