Web-based textbook covering the basic principles of NMR spectroscopy...

Probably the most extensive list of abbreviations for scientific journals available; although it serves as a source for abbreviations used in Chemical Abstracts...

Latest set of self-consistent values of the basic constants of physics and chemistry recommended by CODATA (Committee on Data for Science and Technology)...

International Critical Tables offers data on physical, thermodynamic, mechanical, and other key properties and is a major reference source used by those involved in chemistry, physics, and engineering...

Site covering the essentials of International System of Units (SI)...

Collective site for information on chemical nomenclature...

Knovel Critical Tables is a reference featuring tables of properties for commonly used chemical compounds in the physical properties tables...

National Institute of Standards and Technology Data site for chemical and physics reference data...

Gateway to data collections on reaction data, thermochemical data, IR spectra, mass spectra, electronic and vibrational spectra, and ion energetics data...

Smithsonian Physical Tables contains 901 tables concentrating on a broad scope of common physical and chemical data, of general interest to physicists, chemists and other scientists...

This CD-ROM reference source is the 1999 update to the print copy of the 8th edition of the Table of Isotopes, by Richard B...

Online table listing all nuclides...

Thermochemistry of the chemical substances...

Site describes the method of evaluating and expressing uncertainty in used worldwide...