1. Guidelines for measuring and reporting environmental parameters for plant experiments in growth chambers,1989
2. Metric Units of Measure and Style Guide,1979
3. Radiation quantities and units,1985
4. SI units required in society manuscripts,1982
5. : Standard Practice for Use of the International System of Units. ASTM E380-89. American Society for Testing and Materials, 1916 Race Street, Philadelphia PA 19103. [No date. Perhaps the best guide on SI units in the U.S.A.]