CRC Handbook of Chemistry & Physics This link opens in a new windowOnline version of the CRC Handbook of Chemistry and Physics which is often known as the Rubber handbook. It is a definitive reference source and includes sections on Basic constants; units and conversion factors; symbols; terminology and nomenclature; physical constants of organic compounds; molecular structure and spectroscopy; atomic, molecular and optical physics, nuclear and particle physics, geophysics, astronomy and acoustics, practical lab data; health and safety information and mathematical tables