Reference tables - Code definitions.
ref_codes
An object of class data.frame
with 735 rows and 7 columns.
FIA look-up tables.
O'Connell, B.M.; LaPoint, E.B.; Turner, J.A.; Ridley, T.; Boyer, D.; Wilson, A.M.; Waddell, K.L.; Christensen, G.; Conkling, B.L. 2012. The Forest Inventory and Analysis Database: Database Description and Users Manual Version 5.1.2 for Phase 2. U.S. Department of Agriculture. (http://fia.fs.fed.us/library/database-documentation/current/ver5-2012/FIADB_user manual_5-1-2_p2_07_2012.pdf)