ABSTRACT
A complete description of the International System of Units is given in Page, C. H. and Vigoureux, P., National Bureau of Standards, Special Publ. 330, January 1971. A good general reference for physical constants and conversion factors is Mechtly, E. A., National Aeronautics and Space Administration, SP-7012, 1964. Selected unit conversion and physical constants are given in the following table.
