... included in the introductory remarks in the classification standard for the Economist Series, GS-0110). 4. Work involved in the provision of transportation services to the Government or in the ... GS-0800, the Physical Sciences Group, GS-1300, or the Biological Sciences Group, GS-0400. For example: positions requiring the services of a professionally trained botanist are classifiable to the ... requirement for performing the duties of the position (see the General Investigating Series, GS-1810, or the Criminal Investigating Series, GS-1811). 7. Work of a clerical nature which does not involve...