类别：
- mf
- mech
- bus
- mgr
- clk
- m-f
- coll
- nec
- oppty
- ot
- perm
- dir
- pos
- div
- pref
- eqpt
- prev
- P/T
- eves
- refs
- exc
- rel
- exp
- reps
- exp'd
- req
- ext
- sal
- secty
- F/T
- sh
- sr
- grad.
- stdnt
- hosp
- stmts
- hqtrs
- temp
- HS
- trans
- typ
- ind
- inexp
- int'l
- GPPU
- ICEL
- IISD
- ISSG
- IUCN
- MAB
- ORMA
- RAMSAR
- ROCA
- ROSA
- RSG
- SCOPE
- SSC
- SUR
- TSG
- TRAFFIC
- UNEP
- WCC
- WCMC
- WWF
- WWF
- CTD
- ATTE
- F
- LAMA
- P
- REJ
- TEL
- WG
- PIN
- SID
