Primary health care technologies at the family and community levels : report of the International Workshop "Towards More Effective Use of Primary Health Care Technologies at the Family and Community Levels", Kalutara, Sri Lanka, 28 October-2 November, 1985 - Wilson, Ronald G.; Ofosu-Amaah, Samuel; Belsey, Mark A. (Aga Khan Foundation ; United Nations Children's Fund, 1986)