Integrative Levels Classification project ILC2 developing schedules how it works builder meetings people references
ILC class r39l

ILC developing version
Expanded class r39l

   ▲  broader class

▽ ⌕         r39l                 fuel  ← rbu fossil fuel
▽ ⌕         r39lc                      coal  ← rbuc coal
▽ ⌕         r39lg                      gas  ← rbuy natural gas
▽ ⌕         r39lo                      oil  ← rbue petroleum
 
Connected classes:
 

specificity 
current: 99 

   
Move to another main class:
a b c d e f g h i j k l m n o p q r s t u v w x y

or

or insert a term and do a new

ILC developing version — ISKO Italia <https://www.iskoi.org/ilc/> : 2006.03.06 - 2026.05.14 -