Narasimhan, Chakravarthi V., author
United Nations University, 1994
Buku Teks
Goodrich, Leland M., author
Thomas Y. Crowell, 1961
Buku Teks
United Nations, [date of publication not identified]
Buku Teks
United Nations, 1966
Buku Teks
Departement of Public Information - United Nations, 1956
Buku Teks