Columbia subject headings:
Business consultants--Canada--Directories.
Business consultants--United States--Directories.
Consolidation and merger of corporations--Canada--Directories.
Consolidation and merger of corporations--United States--Directories.
Harvard subject headings:
Business consultants--Canada--Directories.
Business consultants--United States--Directories.
Consolidation and merger of corporations--Canada--Directories.
Consolidation and merger of corporations--United States--Directories.
Princeton subject headings: