No need to leave a comment, purchase directly. Items will be shipped on the same day or the next day after purchase. Anonymous shipping will be used. I have other items for sale as well. Discounts are available for combined purchases, roughly equivalent to the shipping cost. There are a few marks from a highlighter. This is the 8th edition textbook that covers the basics of engineering mathematics. - Title: Fourier Analysis and Partial Differential Equations (Original 8th Edition) - Author: E. Kreyszig - Translator: Kanji Abe - Price: 1980 yen - Edition: 8th Edition - Category: Engineering Mathematics Thank you for looking.