As the authoritative reference on the annual activities and concerns of the Â鶹APP, the Yearbook of the Â鶹APP regularly covers international economic and social questions in its . Take the Â鶹APP Department of Economic and Social Affairs 2020 to let the Â鶹APP know your views on these resources! The questionnaire concerns awareness and use of UN DESA publications; influence of UN DESA publications; translation, access and sharing of UN DESA publications; and demographics.