Asia

1991 The 20th Anniversary of Independence

1991 The 3rd National Census

1991 Landmarks of Bangladesh

1991 U.N. Anti-drugs Decade

1990 Butterflies

1990 Immunization

1990 The 40th Anniversary of United Nations Development Programme

1990 The 100th Anniversary of the Death of Lalan Shah, Poet, 1774-1890

1990 Asian Games – Beijing, China

1990 The 20th Anniversary of Asia-Pacific Postal Training Centre