Columbia subject headings:
Administrative agencies--Bulgaria--Handbooks, manuals, etc.
Executive departments--Bulgaria--Handbooks, manuals, etc.
Harvard subject headings:
Administrative agencies--Bulgaria--Handbooks, manuals, etc.
Executive departments--Bulgaria--Handbooks, manuals, etc.
Princeton subject headings:
Administrative agencies--Bulgaria--Handbooks, manuals, etc.
Executive departments--Bulgaria--Handbooks, manuals, etc.