. . "1981"^^ . "1"^^ . "\u0098A \u009Csubstantial new programme for accelerated development of People's Democratic Republic of Yemen in the 1980's (assesssment of development potentials, constraints, needs and assistance requirements) : Country review meetings / Government of the People\u2019s Democratic Republic of Yemen, Ministry of planning ; United Nations Conference on the Least Developed Countries / [New-York] : United Nations , 1981" . . . .