2 Volume Set Organic Photochromic and Thermochromic Compounds (Hardcover 1999), the following are included in this lot: Volume 1: Main Photochromic Families, ISBN 0306458829Volume 2: Physicochemical Studies, Biological Applications, and Thermochromism ISBN 0306458837 Edited by John C. Crano and Robert J. Guglielmetti, Published by Plenum Press, Both in Very Good condition, light storage wear, Clean from any notes or markings, and has crisp pages inside. VERY NICE Please note Shipping times. Books because of their heavy weight, will be mailed the more affordable USPS Media Mail, which can take 2-9 business days from the Los Angeles area. Faster 1-3 day shipping available. Buy and bid with confidence, check our feedback. Please allow 1 business day for shipping. We are in Pacific Standard Time (Los Angeles area) and many times can ship the same day, especially for items bought before noon.