6402fb99_ey___USGS_Occupational_Ladders__OCCUPATION
[SERIES] All two-grade interval professional positions in the Physical (GS-13XX) and Biological (GS-4XX) Sciences Occupational Groups. [CAREER LADDER GRADE RANGE] GS 5 through GS-12 [OCCUPATION] 
Professional Positions in the Physical And Biological Sciences Groups
U.S. Geological Survey - USGS Occupational Ladders
OCCUPATION