Women's roles and population trends in the Third World : a study prepared for the International Labour Office within the framework of the World Employment Programme with the financial support of the United Nations Fund for Population Activities / edited by Richard Anker, Mayra Buvinic and Nadia H. Youssef. - Anker, Richard, 1943-; Buvini´c, Mayra; Youssef, Nadia H. (Croom Helm, 1982)