Columbia subject headings:
Leatherwork--Asia, Central--Congresses.
Leatherwork--Congresses.
Leatherwork--Turkey--Congresses.
Harvard subject headings:
Leatherwork--Asia, Central--Congresses.
Leatherwork--Congresses.
Leatherwork--Turkey--Congresses.
Princeton subject headings:
Leatherwork--Asia, Central--Congresses.
Leatherwork--Congresses.
Leatherwork--Turkey--Congresses.