- Title: Intellectual Productivity Techniques - Author: Haruaki Deguchi - Publisher: Jitsugyo no Nihonsha - Price: 1500 yen Thank you for viewing. ■ Condition: Used The cover shows some wear and tear, but there are no issues with reading the book. There are no major damages such as writing, tears, or water damage. It is in generally good condition for a used book. ■ Packaging and Shipping We will take waterproof measures and carefully package the item for shipping. We will ship via anonymous and trackable methods, so please rest assured. ■ Other Please understand that this is a used item before purchasing. Feel free to ask any questions in the comments section.