Columbia subject headings:
Aluminum industry and trade--Guyana--Mackenzie--Employees.
MacKenzie (Linden, Guyana)--Social conditions.
Harvard subject headings:
Aluminum industry and trade--Guyana--Linden--Employees.
MacKenzie (Linden, Guyana)--Social conditions.
Princeton subject headings:
Aluminum industry and trade--Guyana--Mackenzie--Employees.
MacKenzie (Linden, Guyana)--Social conditions.