Two new books this month, hopefully there is something that will have you visiting your book shop or online service soon
Light Emitting Diodes
Materials, Proceses, Devices and Applications
Jinmin Li
Springer.com
Practical Guide to X-ray Inspection Criteria & Common Defect Analysis
Nordsondage.com
https://www.youtube.com/watch?v=PBuFuNiKSnA