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

ILC developing version
Expanded class rbu

   ▲  broader class

▽ ⌕         rbu            fossil fuel
▽ ⌕         rbuc                 coal
▽ ⌕         rbucg                      lignite; brown coal
▽ ⌕         rbuch                      sub-bituminous coal
▽ ⌕         rbuci                      bituminous coal
▽ ⌕         rbucn                      anthracite coal; hard coal; black coal
▽ ⌕         rbue                 petroleum; crude oil
▽ ⌕         rbug                 gasoline
▽ ⌕         rbuk                 kerosene
▽ ⌕         rbul                 lubricant
▽ ⌕         rbup                 paraffin wax
▽ ⌕         rbut                 tar
▽ ⌕         rbuw                 petrochemicals
▽ ⌕         rbuy                 natural gas
 
Connected classes:
 
 r39l                fuel  ← rbu 
 r39lc                     coal  ← rbuc 
 r39lg                     gas  ← rbuy 
 r39lo                     oil  ← rbue 
 r3mw                heat engine; thermal energy  ← rbu 

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 -